BenQ HT1075 DLP Projector Overheat/Fan Replacement

[@onooooooooooo]

Thanks for making this. I offered to try fixing a friend's projector and watching you work turned a 3hr job into less than an hour.

[@GC497]

Thank you for your patient explanation and for generously sharing your knowledge. Very helpful.

[@fractal97]

Can you list the model numbers for all 4 fans?

[@fuduzan5562]

This gave a nice in-depth look at that projector's innards (similar to other models from BenQ) and some basic troubleshooting steps. Really well done! Thanks for uploading.

[@RickMeetsWorld]

Hi frank not sure if you can help but my benq tk800 is driving me crazy. I keep sending my projector away to be fixed but a month after getting it back same problem. It overheats and turns off after about 20mins. I changed the lamp but same issue as with the original. And BTW the lamp body is insanely hot!!! Not sure if that's normal. Everything inside is super clean. Also I am not sure if it matters but I have no plastic membrane over the lamp, maybe when they previously repaired it, they forgot to replace it? Also I can I only see two fans when I open it. The one to the right of the body near the back blows inwards and the one next to the lamp blows outwards. Is that correct.. Help please and thank you very much for your great videos. Any advise appreciated. I'm in Spain BTW

[@FixitFrank]

Sounds like the exhaust fan is backward. The exhaust fan should blow out. The turbine fan blows into the lamp and then the exhaust fan blows that hot air out. If the exhaust fan is reversed, it will prevent the hot air from getting out and I would guess it would finally overheat in 20-30 min. It's also really easy to put that fan back in the wrong way. There is an arrow on it that should be pointing out. You can check the temps in the service menu. press menu then enter/source at the same time. use the arrow keys to navigate the boxes. One of the boxes shows the temp and fan speeds. just dont change anything. You can ruin it really easily with one wrong setting. I might be wrong but I kind of recall the Inlet fan being the only one that blows inward. I am fairly sure the rest blow out. imgur.com/a/nyIzDBU

[@gman1087]

Oh i spotted fan layout diagram...got it now ...thanks so much im gonna fix mine as soon as fan arrives

[@joeslovak8527]

Thanks for your tutorials! I have a Sony vpl-vw295es with an exhaust fan that quit working. Any any advice where I might get a replacement fan?

[@FixitFrank]

You are very welcome! Hard to say on the fan source. I know encompassparts.com has a lot of OEM sony stuff. What I usually do it look up the part # on the fans sticker and buy them that way. I forget who sony uses for fans but they dont make them(sony). I'd check encompass first. Then I would google/ebay the part # listed on the sticker that is on the fan. That would be your best bet.

[@smistry93]

Hi Frank, I have the same projector, the bulb exploded a few seconds after I turned on the projector! Glass was found outside the bulb and the lamp housing was extremely hot, do you think there’s something wrong with the projector or if the bulb simply needs replacing? Thanks

[@richardweller4453]

Hey Frank, thanks so much for the vid very helpful. I have the 1075 and just replaced the bulb. She'd fire up for five minutes or so and then overheat and shut down. I checked the hidden menu and found that fan 3 was not working. So I went in looking for glass chunks (that got me last time) but didn't find anything. Did a general clean up and fired it up again, but this time I went straight to the hidden menu. Fan 3 was working fine, spinning at 3100 rpm or so if I remember correctly, so I thought I had (somehow) fixed the problem. No dice, after about five minutes fan 3 shut down again and the projector went into overheat. I have virtually no experience with projector repair but I am going to assume that there is no good reason for fan 3 to shut down in any circumstances (i.e. this behavior is not normal) so my naive conclusion is that the thermostat for fan 3 must be pooched. Would you agree with that guess? If so, would that be hard for a jobber to replace do you think? Thank you so much. Oh yah, and like probably most of us jobbers, I would never have thought to look at the fan blade alignment as a cause...

[@FixitFrank]

Hi Richard, Those fans will wear out even if they are spinning. Sometimes the RPM chip inside will give up the ghost even with the fan spinning. Those fans are pretty easy to change though. I like to use my scope to verify them as the service menu only shows the rpms. I like to see the actual pulses(personal preference, the service menu is fine). You may want to try running it with the top off, and measure the tach output voltage when it fails. I bet you see it go from less than 2v up to VCC(10-12v). That fan should be less than 20quid in my opinion. I see them in the states here for $10-15.

[@satishkad1804]

Than you so much! Your video was very helpful. I had fan3 issue due to bulb bust, opened up and cleaned. Didn’t see anything so put it back and it worked. No issues for at least couple of hours.

[@FixitFrank]

I suspect you are good to go. If you had an old bulb explode, it likely kicked some glass into the fan and jammed it. You cleaning it made the fan work again so as long as that keeps up, you should be in good shape. Enjoy the projector!

[@TheHamous]

you are the god of the benq projector! now I need to fix mine otherwise my wife will leave me and will try to pick you!

[@SuperTubeAndi]

Great video.. Where did you buy the fan? Maybe I am missing the link but if you can point me in the right direction that would be great. Thanks,

[@FixitFrank]

Sure thing. Email Crystal at [e-mail] Be sure to send a picture of the fan. They like to confirm.

[@chessguru900]

Hey Frank. I have a benq mx525 On the left I have a black vertical stripe less than 2" wide and on the right about the same amount is missing also less than 2" across the bottom is missing. Are there any adjustments to be made so I can stretch and expand the image to right and also adjust the bottom missing bits. This is noticeable when I put the test pattern on. I feel as though the whole image needs shifting to the left. Is this to do with the lens? I mean is it machanical?

[@djrikk214]

Hi Frank! Do you happen to have a purchase link and part number to blower fan #3 (the fan inside of a housing that blows directly to the bulb/lamp), for projector Benq w1070?

[@FixitFrank]

It should say "BUB0512L" on the side. Delta makes it if I recall correctly. I do use a company in China called Time Electronics. You can email them a picture of the fan and let them know the model and they can help you. They take Paypal and use DHL. [e-mail] They are a great company. It can't hurt to check eBay as well.

[@carlossartori1818]

Heating defect caused by a small detail in the fan! OK, Frank very attentive to the diagnosis on this Projector!

[@FixitFrank]

It was very strange. I don't recall seeing this before.

[@docolemnsx]

Hey Frank, one question for you because I see you're a pro. First vid of yours I see, and not a connaiseur, just so this makes more sense. I've had this Benq TH530 for 3,5 years now and ever since I started it, I wanted to replace that loud fan. So finally the lamp went out a week ago, and just last night I ordered a new one. In preparation for the lamp change, I decided to open it up for cleanup and inspection, and while at it, I checked out the fan. The first thing that got my attention was that it's a Delta Industries fan, which kinda intimidated me and got me thinking whether swapping the fan isn't in fact a bad idea. I'd love it to be quieter, but I doubt a Noctua fan (if they make 70mm fans at all) would pull the same amount of air through. Also, seeing that in the projector you opened here you also pulled a turbine fan, I realised those are much louder than the fan in question. So my question for you is what are your thoughts on the fan "upgrade" videos out there? I would assume it may be worth it for some projectors with lower end fans, but I have the feeling the only real upgrade for my fan would be replacing the fan with a new one, or maybe just oiling up the existing fan! I do wonder whether it came with a faulty bearing, seeing as yours also had a physical defect. Any thoughts?

[@FixitFrank]

Hah, thanks for the kind words. I don't know if I would say I am a pro but I will take it. I've seen a few upgrade videos but honestly I tend to side with the engineers who designed the projectors. The main problems are confirming and matching the CFM and the method of stall reporting. The stall reporting method varies from projector to projector. Some fans only report when they stall, others report the RPM in pulses. That needs to be matched or you will get fan failure warnings. Some RPM pulses are reported 2 pulses per rpm, versus one. Personally I always try and use the same fan that was in there. I went down the Noctua road with another person a few months ago and they don't offer a turbine fan anyway in that size so it's not really an option. My deduction on your fans is they likely wore out from heat. That blower fan gets a lot of dust through it and tends to have it pile up on the fan blades inside. That makes them run out of balance putting a lateral load on the bearing causing it to wear. Most of these use an oilbronze sleeve bearing. Some use a ball bearing but not many. The exhaust fan just gets pummeled with heat. I find that those lose the edge on the blade causing the airflow to drop off. In your case, I'd replace the fans with original fans or at least original spec fans. They are very available. I would also only change the turbine and exhaust fan. The rest live a pretty easy life. As long as they are quiet that is. If they are making buzzing noises, I would change all of them. Using replacement aftermarket fans would be a neat project to investigate. Matching the fan specs is a little time consuming but I will put it on my list for things to do as I do see a benefit, even for the fact that as fans stop being available we could find compatible replacements at the least or quiet replacements at the best.

[@saurabhgautam7734]

Hi Frank, very nice video. Please let me know which one is fan 1? Is it the one which you finally replaced in the above video? What is the part number for the fan 1?

[@FixitFrank]

imgur.com/a/nyIzDBU Fan diagram. Its the exhaust fan.

[@jayr9476]

Please can you tell me the name of the tool your using at 5:16? I'm looking to replace my own fan due to overheating with the w1070+. Much appreciated and thanks for the video.

[@FixitFrank]

Its just a 5mm nut driver. I think I got this set on Amazon with a bunch of "security" tips. If you have a socket set with 5mm socket, it will work as well.

[@jayr9476]

@@FixitFrank thanks for that Frank 👍all the best in your endeavours, hopefully it's an easy fix.

[@nalleholm]

Hi frank! If you go into thé service meny you kan read/erase error codes, and see raeltime fan rpm. Works on Benq 1070 1075 1070+ and more 1. Switch on the Projector 2. Press the Menu button (on the Projector) 3. Press the Enter and Source Key at the same time (On the Menu screen) 4. Now, you can navigate the service menu using the remote. Just a tips. And sorry for my bad engish //Valle

[@FixitFrank]

That is very helpful. Thank you!

[@josefjans3436]

Hi, Thank you very much for the video! My Benq W2000 suddenly started to get very hot. (it smelled burnt) so I switched off the beamer. I checked the fans, and I saw that 3 fans do not rotate even when the beamer is on. So I ordered 3 new fans. They arrived and I changed all of them. Now I have 2 questions: 1. I know is a kind of stupid question: But am I correct that the van should blow into the beamer? 2. The third "small" fan does not work, even with the new replacement. Do you have any recommendations for me? Best, Josef

[@FixitFrank]

Hi Josef, You're very welcome! The exhaust fan should blow out if I recall correctly. Here is the Level 2 SM for that model. It goes over the fan directions. drive.google.com/file/d/10iGLFpO2Xc1J0GfmBMA7Wl_9boiLXPQg/view?usp=sharing It's very likely the other fan only comes on when certain areas get hot enough. However there is a chance that the Fan_Thermal board has an issue. To check that involves the Level 3 SM. drive.google.com/file/d/1NQhBoO1IqMX_Zdnt27J-1B_L-BbONpnP/view?usp=sharing

[@ChrisKadaver]

Hi! Any suggestion on how to reduce noise of a BenQ W1070+? I like the projector but I really would wanna know if there is a way to make it more silent. I guess the fans are really high rpm so a switch to noctua fans maybe wouldn't do to much of a difference, right? If I attached a cpu-cooler over the lamp... would it then be possible to reduce the speed of the fans in any way?

[@FixitFrank]

Unfortunately those methods wont work in my experience. The Noctua fans use a different fan status reporting method (at least the Noctua fans I saw). Also the CPU cooler wont help cool the lamp much at all. They run so much hotter than a CPU. Average fan temp is +200c at its hottest touchable point. Even hotter inside where you can't get to. The heat is generated by the arc tube inside the reflector. The blower fan (turbine fan) blows air into the reflector to push the heat out to the exhaust fan. All that said, there might be a problem with your exhaust fan or color wheel(they can make noises like a bad fan). I run an HT1075(same as the 1070+ inside) in my bedroom and I sit about 5ft under it and do not hear the fans even in normal mode. You should really only hear the air moving in my experience. I mention the exhaust fan because it seems to be a popular failure for the fans. The problem with changing fans is you need to maintain the CFM (airflow amount) and use the same fan lock/fan status specs. Some fans report PWM with one pulse per RPM, others 2 pulses per RPM. Some pull the fan status lead high for fan stall or pull the lead low for fan stall. If you don't match those, it won't work at all. If you can match the size, the CFM and fan status type, then you can use other fans. I tend to use the originals because I figure the engineers spent the time and picked them for a reason. I would like to experiment sometime and see what could be done. I hear this a lot so its obviously something enough people run into. Maybe if I can get my hands on some other "quiet" fans and see if they will work... (really I need more free time. I'd love to give you a real solution). You may want to check your service menu and see if you have any old fan errors. Press menu, then press source and enter at the same time. It should bring up a little set of boxes. Then use arrow keys and enter/menu to navigate the screen to find the fan status page (option 3 or 4 I think).

[@luislozada8477]

Buen. Día, donde encuentro el ventilador para cambiar

[@mbfree2003]

I would like to thank you for the video.tearing down right now. Only issue was remote wires, but should be able to get them back on, it's not a plug each wire on its one barrel connector. Oh I had a bulb explode. I found a quarter inch piece of glass in the fan. Again thanks for the video

[@FixitFrank]

Let me know if you need any internal pictures or wiring order. I have another one in my shop currently.

[@tijmeng8550]

Where you checking the feedback signals? or the pwm send to the fans?

[@FixitFrank]

These do not have PWM sent to the fans. They use RPM output as a square wave. The speed is determined by the dc voltage sent to the fan. The place to check depends on the fan but it seems to be on the grey wire or pin3 on each fan. You can check with a volt meter to find the pin. It will be the pin that is 3.3v or lower and not ground. I hope that makes sense. I have another video on checking projector fans kzbin.info/www/bejne/oXSyhIRumbuNrMU

[@tijmeng8550]

@@FixitFrank I have a scope. But i meant, you have three wires, input and output of the fans. The RPM square output is probably in millivolts? Not in the range of 3.3 volts rights? So What you were measuring is probably the input square wave? I ask this beacause I had the Fan out of the projector and just check the output squarewave in combination wih 9 volt battery, but the square is not as nice as yours and in milivolts range.

[@FixitFrank]

These fans do not use PWM for power control. The speed is controlled by the DC input on the VCC wire. 12v being full speed and 6v (usually) being the lower they will spin. The other wire is "fan status". Some fans use a pwm like signal for reporting the RPM to the projector for fan stall reasons. Others will pull that wire high or low on fan stall. Only 4 wire fans use PWM for speed control. The reason the wire shows you such dirty PWM is that it needs to be held high via a 10K resistor. Here is a diagram of how to test and how it works. imgur.com/a/6uOIiDv You may also want to watch this. kzbin.info/www/bejne/oXSyhIRumbuNrMU

[@fikusny2011]

Hi, thanks for your video, I cleaned my working projector and after reasembly I cant run it, no power at all, even LED indicators on buttons are dead. any clues what I did wrong?

[@FixitFrank]

Hi, I few questions. Is the lamp cover in place? The cover depresses the switch that turns on the mains power. If not, check the thermal switch connection to the power supply. Also, be 100% sure you did not install the mainboard offset from the power supply pin-riser. It is easy to shift the connection one pin over. Most of the time it ends up being a wire you thought was plugged in and was not or something like that. I have had to put together and take apart only to repeat that 3-4 times on occasion.

[@fikusny2011]

@@FixitFrank ​ @FixitFrank thank you for your message :-) all working now. When I was reassembling projector I put 14-pin ( 7:38 - partially visible on the right side of screen ) connector on the other side of metal cover so basicly it wasn`t even connected to board. Basic mistake but I found it. Have a nice day :-)

[@FixitFrank]

@@fikusny2011 I have done that so many times. Now I even shine a flashlight in there just to be sure. It's a really easy spot to offset. Nice work and congratulations!

[@danielhill7519]

Hi Frank, I just replaced my bulb. This is the 3rd bulb. #1 lasted 3 years and went dim and I replaced it with #2 which also gave me 3 years but it recently exploded. So I bought and installed bulb #3. It is a stock Osram. The projector was NOT shutting down before I replaced the bulb. In fact, I was using the original bulb #1 for a month as I waited for the new one and it worked fine. So the new one seems to be getting hot and shutting down? Seems like if it was a fan issue it would have been shutting down with bulb #1... ? Thoughts?

[@KlempirinaCz]

the projector warmed up after cleaning in the service and it always turned off after 7 minutes the lamp cooled down and then the projector turned on and the red lamp lit. The lamp is lit 1450h. and the fans spun at 4500RPM. It wasn't clear to me, but when I drove the machine to a cleaning service, everything was fine. After weeks of reading the forum, I got angry and opened my projector and found a flaw in the front fan being turned, which was blowing inwards. I turned it so that the arrow of the fan pointed out and assembled the device. The projector is working, not humming and is well ventilated and the speed is 1900-2100 RPM. service might know this but don't you think? I'm a layman, but I don't hesitate to start everything, and if I knew I wouldn't go into that projector, I still had to. nice day Honza

[@medstud]

I have an HT1075 with the exact same problem. The projector has been used sparingly, as in less than 250 hours. The exhaust fan has one warped blade, EXACTLY in the same pattern as the one in the video. How is it possible that one slightly warped blade can cause a 10 degree difference? And is it possible that the warped blade has always been there, but that the fan has just gotten old and isn't running at the same rpm? Also, when you tested the fans with the voltimeter it showed 6v when the fan's specs say it's a 12v fan. Isn't that an issue?

[@FixitFrank]

I'll be honest in that I am not sure why exactly those fans act that way. My suspicion is that they were not that bad at first but the heating and cooling causes the blade to warp and the leading edges to become more blunt. They use the airfoil design to move air rather than a pushing design with some angled blades. If the airfoil becomes inefficient, the air isn't going to move well at all. I also think Abba may have had a bad batch of fans. My personal HT1075 had the fan next to the DMD heatsink fail after 5 hours(brand new). I bought it on eBay but didn't know it was that new until I fixed it. The entire unit had about 15 hours including the factory testing (going by the service menu). The normal menu showed 5 hours on the lamp when the fan failed. The rated voltage is the max voltage the fan is happy with. There are chips for each fan that control the output voltage to change the speed as needed. It helps keep the noise down. 6v runs the fan at about 60% of its rated speed. It would go up closer to 12 when its in cooling mode. Thankfully that is normal.

[@medstud]

@@FixitFrank cheers. Thanks for the response. Thankfully this model was quite popular back in 15/16’ so the spare parts are aplenty. I stripped down the unit and there’s nothing else that seems obvious apart from the fan in question, but I’m tempted to buy the whole 4 fan set because I don’t own a voltmeter and who knows which one is acting up.The lamp itself looks brand new with no heat damage.

[@medstud]

@@FixitFrank how would you rate the aftermarket lamps by the way? The price difference between the original and what can be found on eBay is huge.

[@FixitFrank]

If you can get the projector to power up for a few min, you can check the service menu(press menu, then enter/source at the same time) and you can check to see what fan it is. I'd definitely replace the exhaust fan. The other fan I see fail is the DMD fan (if yours has one, some of them didnt). The blower fan is probably fine unless you had a lamp burst at any point in the past. Aftermarket lamps are a range of quality. Most of the stuff on eBay is garbage. The large issue is that the lens used for the 5J.J7l05001 needs to have an ND coating to block UV/IR from ruining the optics and confusing the color wheel. In fact, I made a few vids on what to look for. If you know what to look for, you can save some money but don't believe any claims you read on websites about equivalent lamps and Osram or Philips. kzbin.info/www/bejne/pqrQaHdtmtmCma8& My day job is actually in the replacement lamp industry so it's something I deal with daily.

[@1tuf626]

Hi Frank. I have a friend who wants to sell me his BenQ HT3550. He lives in NC. He describes a problem similar to the one in this video. It runs for 40 minutes then shuts down. Instead of having him ship it to me, I could have him ship it directly to you, and you send it to me when you're done. What do you charge for the initial troubleshooting?

[@FixitFrank]

If you are still thinking of getting it, contact me via email (on the about page). We can discuss. I do not charge for troubleshooting. A decent tech can do that part for free. Especially when its not his main source of income :)

[@TallStarlite]

@FixitFrank Do you know the size or a part number to "inlet fan4" my seems to rattle after a while. Then if I tap on it it stops then starts again after a while. So I figure I'd replace it... Thanks for all tips & videos!!

[@FixitFrank]

I'm pretty sure its ADD0612HX-H93. Made by ADDA Corp.

[@TallStarlite]

@@FixitFrank Thank you

[@stevencassata9261]

Hi Frank, I have a benq ht1075 the bulb recently exploded. I ordered a new bulb, installed it, and now I don't have any light from the bulb. Eventually the red lamp light comes on and it shuts down. I've watched some of your videos to try and diagnose the issue but haven't had any luck. My color wheel is working. And my regulators seem to be ok. Any other ideas what I can check/what the issue is?

[@FixitFrank]

Hi Steven, Check the lamp blower fan for bits of the old lamp. They tend to throw chunks of quartz into the blower fan. It does not take much to jam it up. That would cause this error too.

[@marcusdamberger]

Hi Frank, I have a W1070 that appears to permanently be in download mode. Red LED on Power button only, no other LED's lit up. I've tried to download the firmware with DLP Composer Lite via USB and RS232 connection. It never connects to download. I suspect the firmware or boot up loader is corrupt and its never getting to a stage to be ready for a download. Is there a way to re-flash the firmware over one that is corrupt? I suspect it would have to be done via the main board, and not through the USB or RS232 connection on the outside.. Or is a new motherboard the only solution at this stage?.. Your videos have been super helpful in the past, thanks!

[@FixitFrank]

Hi Marcus, The PMD1000 IC would be suspect here. It is probably not powering one of the other secondary power rails. elektrotanya.com has the service manual( if you do not already have it) but I would verify that PMD1000 IC is working first. I doubt the original firmware is corrupt at this point.

[@marcusdamberger]

@@FixitFrank Thanks for the tip! Do you happen to have a video featuring this chip? i.e. replacement, or diagnosis of it? Are these chips typically surface mounted? Appreciate the info!

[@valentisivanovich9831]

Thanks Frank, everything is beautiful and clear!

[@FixitFrank]

I'm so happy to hear that Ivan! Добро пожаловать! Прошу прощения за мой русский язык. Я рано учусь. :)

[@valentisivanovich9831]

Frank Your russian is perfect, keep on learning. I wish you well :)

[@redredlight]

Hello Frank, I'm having a similar issue with this same machine HT1085ST, although my machine auto-shuts off after a few short minutes, and the control panel shows the Power Button RED and the Temp Button is GREEN. The manual states that this is likely a fan issue. I tried turning on High Altitude Mode, and this did not stop the machine from turning off. Any suggestions? Thank you Frank!

[@trevorjames5493]

How do we know which way to put the fan back in I took it out but I'm not sure it's supposed to go which direction lol one side the center is a solid plastic piece and on the other side is a metal circle in the middle it's a benq ms510 thanks

[@FixitFrank]

Which fan? Usually they blow outwards if its an exhaust fan but I would need to know which fan you mean.

[@fabbricapescirossi]

I think to have the same error: the manuale says "red led temp blinking" It Is error fan 2. Whic Is fan 2 in the Benq projectors? Thank you for your answer and great channel!!

[@FixitFrank]

Thank you so much! Fan 2 is the power fan. Back right corner if you are looking at the connectors. Here is a diagram imgur.com/a/nyIzDBU

[@FixitFrank]

@@fabbricapescirossi ahh you have a 2050? it looks like? Blower fan and lamp fan are the same. It's the fan behind that heatsink. You also have an exhaust fan. That's the fan in the front (bigger square fan). The fan numbers should be printed on the main board by the connectors. Worst case, replace the blower fan and exhaust fan. What model is that?

[@fabbricapescirossi]

@@FixitFrank thank you again 😁. The model should be Mx620st

[@mojimbo]

Thanks for the video, made it very easy to trouble shoot and disassemble my projector. Any suggestions for where to purchase a replacement inlet fan(Fan#4) for a w1070 model or a model number I can google? The service menu shows all other fans working fine except for that one showing 0 RPMs. Thanks!

[@FixitFrank]

I use a company out of China called Time electronics. They ship DHL And take paypal. I have also found them on eBay. Best bet is to search by the ABBA part # on the sticker. Otherwise contact Time Electronics, [e-mail] They are very good. Be sure to include a picture of the fan so they can verify the right part.

[@mojimbo]

@@FixitFrank Thank you , was able to easily find it on eBay. Item number was ADDA ad0612lx-h93. Thanks again.

[@sheranhenrysrilanka]

Hi Frank, I am from Sri Lanka, and own a Benq HT4050 projector. About 1 year ago this projector started giving me an uneven gray screen with a few white dots, after a while of showing good images on screen. The time the projector worked fine before the gray screen appearing became progressively shorter. Sent this to Benq in California, and have been using this for about 2 months, and the problem reappeared. Really frustrated that Benq makes projectors like this! What do I do to fix this?

[@FixitFrank]

Hi Sheran, That sounds like a failing DMD unfortunately. BenQ's service is definitely something that I find quite poor too. I see a decent amount of refurb projectors or warranty repairs that are poor quality. IF you can link a video of the issue, I can weight in more precisely.

[@jonathanriley469]

Hey Frank, I know this will sound stupid but I have an EPSON EX5220 that hasn't been used in months and when I turned it on I noticed the intake fan had LOADS of dust build-up so the first thing that came to mind was to take the air compressor and blow the dust out because I didn't have any canned air... ANYWAYS, I may have gone a little overboard with it and ended up shattering the intake fan... I looked and looked online for a replacement fan but had no luck. seeing how you're a pro at this kind of stuff I figured you would know where I could buy one. Thanks.

[@FixitFrank]

I've done that. Those fans will overspeed and fly apart if you let them. It's kind of fun sometimes with scrap fans. Not so much when you need the fan... Type the part # on the sticker into Google/eBay. Im sure someone has them. Be sure you use the same part # because the fan stall/RPM lead is going to be one of the few different types and if you substitute the wrong fan type(even if voltage and size match) it may give you fan errors if the RPM/fan stall lead uses a different signal type than the projector expects. If eBay/Mouser/Google are no luck, after Chinese lunar new year, you can try Time Electronics. [e-mail] Be sure to send a picture of the old fan with the sticker showing.

[@jonathanriley469]

@@FixitFrank Alrighty, thanks man.

[@boprather6218]

Hello Frank! I have an Benq MP512ST. The projector will come on for about 3-5mins and then the “Temp” alarm will come on. I have replaced the lamp, like you suggested but I still get the same problem.

[@FixitFrank]

Hi Bo, That likely is pointing to the exhaust fan. The fan that is visible inside where the lamp goes. Try it in High altitude mode and see if it runs. If so, then you need a new exhaust fan which is only about $20 shipped.

[@peacekeeper4528]

Hi Frank hope your doing well I have a question. I purchased a Optoma Optoma HD131Xe. I took it apart an cleaned it and noticed it has no lamp thermal sensor attached to the lamp housing. I noticed it's similar to the HD20 model and where the lamp thermal sensor on the HD20 is the Optoma HD131Xe looks like it had a thermal sensor in the same place. I can barely see it outline like it was there at one time but I can't see anywhere where it would plug in on the main board. So do you know if Optoma didn't install a lamp thermal sensor on the lamp housing. I bought it used from the original owner and he said he never had any problems with the projector. Just think it's strange why the lamp housing on the Optoma HD131Xe has the image of where a sensor was but isn't now.

[@FixitFrank]

Id have to see inside, but they can be low voltage or high voltage. The trip mechanism is the same. I have seen them on the blower fan, the DMD housing and other places. It would be strange to not have one at all, but I suspect it is in a different place. You are referring to the little rectangle self-resetting thermal fuse correct?

[@peacekeeper4528]

@@FixitFrank yes but now it's dead. It had a flickering image. I thought it was the color wheel. Cleaned the color wheel an noticed the flickering happened after the projector warmed up. So I read a failing bulb could be the problem. Well I replaced the bulb and as soon as the power cord touched the power connector a spark shot out from behind the power connector and now the projector is dead. So I don't have a clue as to why it would of done that just by replacing the bulb. I have other projectors an replacing the bulb has never caused a short. I'm guessing the person I bought it from was not being honest about it. So now I'm at a loss of what could be going on. If I could send you pictures I would send one where it sparked from. There is no burn marks in the area the spark came from. The one thing you mentioned about a fuse in regards to my first comment I don't really know for a fact but when I researched it. I learned it senses the heat from the bulb to control the fan and increases the fan speed to maintain the temperature of the bulb. I'm guessing it's integrated on the circuit board somewhere as there is no extre external plugins on the board for one. Just thought it was strange how there is an outline on the metal casing surrounding the bulb.

[@Pebe292]

Thanks for the video Frank. I have a Benq w1300 and after a couple of minutes the colour changes and it shut down, the cooling runs. No overheat light on. I be happy if you have a suggestion where to start.

[@FixitFrank]

Hi Peter! You're very welcome! The symptom says the color wheel is acting up, but why it's acting up is not as clear. If you replaced the lamp recently, the new lamp may not have a proper UV/IR coating. That can cause this issue really quickly. The glass on the housing should have an obvious reddish tint to it. If it does not or has a greenish tint, that is your issue. If the projector was running happily and then all of the sudden this began to occur, it could be something as simple as needing a cleaning or as complex as a new color wheel. They do wear out over time. A new color wheel should only be $30-40USD. It all depends on when the issue started. I hope that helps and thank you again for watching!

[@Pebe292]

@@FixitFrank It started with the original lamp, then I tried two osram but still it shut down. I'm down to the colour wheel now and the colours looks faded. It doesn't have clear red, blue, green. It's more like lila, green, yellow. Is there a way to test the wheel? The funny thing is that it works good for a couple of minutes then the colours mixes up and it shuts down without. But it looks like the colour wheel to me, so I will order a new. Thanks again.

[@Pebe292]

I found out that it could be that the colour wheel stops due to dirt. I will try to clean it.

[@Pebe292]

I changed the colorwheel and fan, and it worked good for a couple of hours. I havn't used it for a while and now error is back. It changes color, ends up with lilac and shut's down, fans starts to blow. It does sounds like the colorwheel stops running. But, since I have to reopen I will order an new main fan, is it the same as a W1070 fan?. I can go in to servicemode but don't know where to find the errorlog.

[@ThreeForks]

Buddy blew his bulb and gave it to me when it was overheating. Found glass in the black fan in the bottom. Cleaned it out and it was working, but now has verticle white lines. Any suggestions on what that might be?

[@FixitFrank]

sorry this is so late, but its the DMD connection to the mainbaord. Reseat it and you will be gold.

[@shomu001]

Hi Frank - I have W1070 and I see 2 solid red lights. After checking the manual and the secret menu for fan rpm I found it is because of fan1. 2 questions..Which one is fan 1 and can you share the link from where you purchased the fan.. Thank you sir !!!

[@FixitFrank]

Fan #1 is the fan I replaced in this video. They are pretty available on eBay or if you want, you can email my contact in China. The other option is to google the part# on the sticker for a replacement. Be aware that there are multiple types of fans that look like this and they are not all compatible. The RPM wire behavior varies across models so you need to use the same part as the original . I find them by searching W1070 or W1080, or HT1075 fans. They all use the same part in that regard.

[@shomu001]

@@FixitFrank Thank you so much sir for the response. Also one point I should have mentioned is that my projector runs fine for 30mins and then stops. So I am assuming projector lamp didn't explode. I will look into W1080 video repair that you have suggested. Thank you again sir !!!

[@FixitFrank]

@@shomu001 I had to edit my original reply. I was looking at the wrong manual. The #1 fan is the exhaust fan. Here is the diagram from the service manual. imgur.com/a/nyIzDBU The fact that it runs 30min or so makes sense. It should be the same fan as in this video.

[@shomu001]

@@FixitFrank Thank you so much sir for taking time out and patiently responding to my questions. I really appreciate your help on this !!!

[@dextercaeiro]

Hi Frank, Would you know the location of the temperature sensor T1? T1 on my projector indicates about 70DeGC as soon as it starts with an outside air temperature of 7DegC (Its my cold garage). Would the temperature sensor be faulty?

[@FixitFrank]

Ooh! That sounds incorrect for sure. Is it the same model as the video? The sensor may be faulty.

[@dextercaeiro]

@@FixitFrank Its a Benq W1070. I ran it for about three hours a couple of days ago. It ran in high altitude mode with error check disabled and the lamp fan at 4000rpm (manual override). Indicated T1 was 220DegC with an outside air temperature of 20DegC.

[@pauladegenhardt1926]

I just put in a new bulb and housing. But now I have the power and temp red light flashing. What do I do now? It comes on and said sources is detected then it goes off.

[@pauladegenhardt1926]

It’s a BenQ HT1070A

[@FixitFrank]

Hi Paula! That is usually a jammed/stuck fan. If your old bulb exploded, it may have thrown some quartz bits into the blower fan. Thats a common issue. Either way, you have a fan that isnt spinning. Search my channel for "fan" or " blower fan". I have some videos on that. If that is your situation, its an easy fix that does not require new parts.

[@saurabhgautam7734]

Hi Frank, where did you buy the fan from?

[@FixitFrank]

I ordered it from www.chinatoplamps.com/ You can also find them on eBay. Any W1070.W1080, HT1075 or HT1085ST listing for fans will work.

[@rohitseedath1673]

I have a benq mx522 projector. Start up and temp light red flashes. It displays only the benq screen. Fan cycles speedily. What can be the issue?

[@FixitFrank]

I would suspect a jammed fan or a slow exhaust fan.

[@Jup13]

My Projector had a similar problem. Turned out, the former owner put the power supply fan back in the wrong way around after cleaning the insides of the projector. It's definitely always worth not only checking if the blades are turning, but if they are spinning the right way haha.

[@FixitFrank]

I have done that. Thankfully I caught it... your advice is spot on!

[@mbfree2003]

Have you ever seen the bulb plug melt, I replaced it two months ago now the bulb went out so I went to pull it and can't get it out. I broke the plug to find out its melted together.

[@FixitFrank]

Yup. I have seen that a few times. Sometimes its from a bad male pin that isn't locked into the lamp connector, other times its the internal connector drying out and cracking when the new lamp assembly is installed. Fortunately its usually very repairable. Check out my Optoma video. kzbin.info/www/bejne/aGbCg61rebaGo9k If you are in the states, email me. I have access to replacement connectors. If you are not in the states, I have a contact in China who can help you with a connector. Usually the ballast and everything else is OK.

[@mbfree2003]

Thank you so much, I will get it apart and get back to you for parts. From your reply it could have been the new bulb not fitting right and pushing the pin out of the plug?

[@FixitFrank]

Its hard to say without seeing it. Older projectors can have the female pin push back and sometimes the new lamps have pins that slip. I'd really have to see it to say what the cause is. However, being that projector lamp world is small, I am actually aware of your issue. I'll be in touch a little later today.

[@gman1087]

Hi great informative vid...that squirrel fan is that fan 3?...fan 3 on my ben q w1070....says fault ...0 any help with identifying fan 3 appriciated.

[@FixitFrank]

I think so. On my "community" page there is a post where I have a map of that fan layout. kzbin.infoUgywjB6ucj44mbxCtrd4AaABCQ

[@gman1087]

@@FixitFrank cheers frank...im gonna order a new one if i cant get the old one spinning...tomorrow though its 9pm here in uk. I will keep u posted hete with my progress. Have a fab day where u are . Cheers for the guidance buddy x

[@FixitFrank]

@@gman1087 You are very welcome! I'm on the east coast of the USA so its only 16:00 here. Talk to you soon!

[@gman1087]

@@FixitFrank frank ur remedy worked a treat....there was a bit of glass shard in that squirrel fan....gave the whole thing a good clean.....no more error codes....projector running much quiter...not shutting down.....just watched a bit of a film on it. Mate cant thank u enough. Honestly if we were local id get u a pint or two. Glen

[@FixitFrank]

Fantastic! Reading these sort of results always make me smile! Once the covid garbage is over, maybe I will make a trip across the Atlantic and take you up on that! More importantly it is working! Enjoy my friend

[@TheMidosas]

Dear Mr. Frank, Thank you so Much for your video and your continues support, please allow me to ask for your opinion. I have a benq W1070, it gets overheat and shutdown after 2min. if i dont use the (high attitude mood). I opened the hidden menu to monitor all fan speed. i found out that Fan#3 rpm stops suddenly, then the projector shutdown with the lamp red light warning on. using your video on how to open and clean the blower fan, fan looks good, after cleaning and putting it on a test, still same issue. ihope i was clear, and thank you for your time. Regards,

[@FixitFrank]

Makes total sense! Oddly I have seen those fans fail intermittently. I had one with 15total hours that failed. I'd put a new fan in first. You can buy them on eBay or Google the model # on the side. The fan needs to be the same model or the CFM and the status wire may not be compatible, even if you match the size and voltage.

[@TheMidosas]

@@FixitFrank thank you sir

[@ndub80]

Very helpful video. I've been following along but I'm having some startup issues after reattaching the circuit board. When I plug it back it in, the power indicator light (the word "power" over the source button) remains a solid red and pushing the power button (solid green color) has no effect. I noticed in your video that when plugging in a power source your power indicator light changes from red to orange. Any thoughts as to why my power indicator remains a solid red and I can't turn it back on?

[@FixitFrank]

Red means a fan problem. Make sure all your fans are securely plugged in. Also make sure the power supply pins are not offset to one side when you plugged the mainboard back in place.

[@ndub80]

@@FixitFrank Thanks for the response. The fans all appear to be plugged in correctly. I initially ran into the power supply pins you mentioned but solved that earlier on. I've read on some forums that a solid red light means "stuck in download mode" and removed all cables and held down the power button for 10 seconds. All to no avail. The original problem was glass in the main blower after my bulb exploded. Saw you covered that in some other videos. Still stuck....

[@FixitFrank]

@@ndub80 Ah. OK. In that case, you might have a bad PMD1000 chip. Stuck in download mode can also mean the MCU is not booting fully which can be due to a secondary power supply issue(that PMD1000 chip and the associated voltage regulators). You might want to start checking voltages on the mainboard against the service manual.

[@ndub80]

@@FixitFrank Before I began the whole process, the projector would fire up fine but would just shut down after 2 minutes because fan 3 wasn't spinning due to the glass shards. I don't know if it's stuck in download mode for sure, just something I read in a forum. I've disassembled and assembled this projector like 3 times to see if there were any loose connections or anything hooked up wrong. I'm thinking I must've missed something when reassembling it cuz it would turn on fine before I disassembled it. I'll try to check the voltages. I appreciate all the suggestions up until now.

[@gman1087]

This was a teaching video

[@alphonsajose4475]

Hi… how to fix benq w1070 power red light issue

[@FixitFrank]

Does the light never change when you press power?

[@tomatack]

Hi Frank, I wonder if you can help me. I have a similar problem but your solution did not work for me. My BenQ W1070 has started overheating. I tried replacing the main fan but it makes no difference. When I turn on the projector, the temperature goes from 200 to 400+ in a couple of minutes, with the fans going into full speed. I have cleaned it and installed a brand new BenQ lamp unit. Not sure what to try next. Any ideas?

[@FixitFrank]

Hi Tom, There are 2 fans that do most of the work. The blower fan would be my other suspect. If it has its blades coated in dust it can slow down the air flow into the lamp. Did you have any old lamps burst when they failed?

[@tomatack]

Thanks Frank, I have taken a peek inside the projector and one arm on the blower fan is damaged. Getting hold of a new one here in the UK is next to impossible. Don't suppose you know where I might source one? I also noticed the plastic casing between the fan and the lamp is not keeping an airtight seal. Might this be where the problem lies? Not sure how on earth I get a new one though. I at least feel like I am closer to finding out what is wrong though, thanks to your help.

[@FixitFrank]

@@tomatack Sure thing! I have a friend named Crystal from a company called Time Projector. She is in China so shipping to the UK is no problem. [e-mail] is her email. She will ask for a picture of the fan(to make sure they have the right one)so if you include a picture with your email it will speed up the process. The price should be very reasonable. I'd guess $40US with shipping and the fan, so 30quid if I had to guess. At least in that ballpark. She takes paypal so everyone is protected. They would be your best bet for sure. It may even be more economical(with shipping) to buy all 3 fans from her and replace them all. I would at least replace the blower and the large fan. Don't hesitate to ask if you have more questions!

[@tomatack]

Thanks for the recommendation Frank. Crystal is a gem. The fan was cheap and arrived quickly. My projector is still not working though! It makes all the right sounds starting up but there is no light from the lamp, and after a few seconds it turns itself off, leaving me with a solid red lamp fault light.

[@FixitFrank]

@@tomatack Glad to hear the fan was easy. As far the lamp not lighting, a common and easy to make mistake is flipping over the color wheel cable when re-inserting it. I would check that and then make 100% you didn't forget to plug another wire in. The ballast wire in particular would be a concern.

[@TravisBurrell]

Why didn’t you just go into the secret menu to see what error on what fan you were getting??

[@FixitFrank]

not all projectors have service menu's and this shows how to check them.

[@TravisBurrell]

FixitFrank this model did. Lol.

[@FixitFrank]

@@TravisBurrell right. But people watch these with other models that do not. And you will see a comment or 2 down that its listed. I don't like to suggest going into the SM as you can create a lot of problems.

[@vidafuku]

I should have sent my 1070 to Frank before adding a heatsink to it