I Bought 6 BROKEN Projectors - But Can I Fix Them and Make Money?!

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I Bought 6 BROKEN Projectors - But Can I Fix Them and Make Money?! I paid $1,200 for 6 broken projectors. They're all Optoma projectors and have a variety of problems including a lamp error, image issues, a couple loose zoom rings, smoke damage, and a buzzing sound.
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[@Tronicsfix]

Two things: 1) In this video I show checking the fuse to be sure there is no voltage there. As several commentors have pointed out (Thank you!). This is NOT the correct way to check voltage on the large caps. You need to check on the capacitor legs themselves. 2) Just wanted to add that with items like these I either test them more extensively or I sell them as untested. Either way I always make sure potential buyers know what they're getting. I'll be posting on my community tab, Instagram an Facebook when I start selling stuff.

[@amberazurescale5617]

Glad you mention 'cause I was already wondering how one can call a projector "all fixed" when not even a stand-still image on a proper projection surface was tried. In case you decide to do the testing, I'd be interested in a video on testing procedures and outcomes for sure... Oh yeah, and testing the voltage drop on a fuse doesn't seem to make any sense.. I was wondering about that, too.

[@mjc0961]

FYI, you have to pin the comment again if you edit it. Found this down near the bottom of the page.

[@Tronicsfix]

@@mjc0961 Thanks for letting me know. I had no idea.

[@racemediahungary233]

Hey @TronicsFix Can i have a question?

[@Witchlord]

@TronicsFix Any way you can try to fix a few tvs? Seems like t-con boards and power boards are easy enough for you to test and possibly fix. It also seems like a large area where people just discard what they bought, rather try to repair them.

[@TerminatorJuice]

As a home theater projector owner since 2005, I can tell you that just having light output does NOT equate to being "fixed". You need to test with the image projected on a wall to make sure you can get it focused and that the colors and contrast are acceptable with moving images. You can have an older bulb that puts out light, but the image will lack any depth or looked washed out, so that's something that needed to be tested.

[@jaybirdvc15]

I agree with terminator, half ass "fixes"

[@bonnerikbarrogataday6289]

Maybe you're a first time viewer.. When TronicsFix says "It's fixed" it is definitely fixed.. I am sure that he tested them off-camera.. You should watch more of his videos to see what I mean..

[@TerminatorJuice]

@@bonnerikbarrogataday6289 I've been watching his videos for years, and he normally says he does more testing off camera, but I didn't hear him say that for these projectors...

[@shiftctrlhack]

@@bonnerikbarrogataday6289 ya your not correct there buddy. He only checked for light... really?

[@bonnerikbarrogataday6289]

@@shiftctrlhack 12:47 If you look closely, the projector is hooked up to a computer.. You can see the icons on the upper left corner and the taskbar at the bottom.. He's not just testing for light..

[@andyo1872]

Test them like at least 1~2hours . When I worked on projectors cost over 10,000 dollar per each. They sometimes showed some sort of weird issues when I run them for few hours. They were expensive but not reliable at all. *Rumors and things I experienced, If you use "non-genuine" lamp for your projector, they might cause damage to a filter on lens which might give you fuzzy or darkened image even after putting a new lamp. (We ended up replacing several projectors due to darkened image Replacing a lamp was not a solution)

[@Tronicsfix]

Agreed. I'll likely sell them as untested since I don't have time to test them for that long.

[@jarateman6427]

@@Tronicsfix You don't have time to turn on 6 projectors and come back in 2 hours? Also you didn't check the audio on any of these at least you didn't on camera.

[@dpowerful1]

@@jarateman6427 I guess he's made his money from the sponsor spot and video, that's the important thing

[@-never-gonna-give-you-up-]

Thats for the next customer to find out 🤣🤣🤣

[@SteelOfLegend]

@@Tronicsfix Use them for a movie when you are relaxing with the wife. If it acts up, swap to your normal screen. Idk, just an idea.

[@housinit]

Awesome man! One thing though, never, ever , ever clean a lens with alcohol. The alcohol can very quickly damage lens coatings, specifically the anti-reflective coating that is on them. Always try to use a lens specific cleaner or if you don't have that, then an alcohol free glass cleaner. This goes for any kind of eyeglasses also. Awesome job though man, love it!

[@dorfschmidt4833]

Wrong.

[@housinit]

@@dorfschmidt4833 I can understand why you may think that is wrong. A cursory search on Google gives you an answer to clean anti-reflective coatings with a 15% IPA 85% H2O mixture, directly from a coatings company. What that search fails to explain is that to REMOVE anti-reflective coatings you use a 85% IPA to 15% salt H2O mixture. The salt merely helps to oxidize the coating faster to remove it. Considering that we in the electronics repair community use 99% IPA most of the time, it is absolutely not recommended to use IPA, even 70% IPA on coated lenses. Sure, if there is no coating, use as much alcohol as you want. I have used all techniques to clean and/or remove coatings. Years ago I would ALWAYS use alcohol to clean lenses and I always hated when coating would start to degrade over time. My thought was that it was just wear and tear. then I learned about all this crap and low and behold, no more degraded coatings.

[@dorfschmidt4833]

​@@housinit If you don't want to use alcohol, use petroleum ether. I use different alcohols and also other solvents. I also have my own mixture for cleaning lenses, mirrors, low pass filter.

[@MrGenie23432]

@@dorfschmidt4833 a lot of the projector manufacturers specifically recommend against using alcohol or any harsh chemicals. Sure you can use them but you are taking a chance and you are voiding the warranty.

[@MrGenie23432]

@@dorfschmidt4833 from that projector manufacturer's manual.. "Do not use alkaline/acid detergents or volatile solvents such as alcohol for cleaning lens. If the lens is damaged due to the cleaning process, it is not covered by the warranty."

[@kresimirpecar4925]

One small notice, when checking if there is charge in capacitors, always measeure voltagr across storage caps. Measuring voltage at socket will always show 0V (if bridge rectifier is good) because bridge rectifier will block DC. Also if fuse is not blown there will not be any voltage across it. (There will be voltage drop across it when the projector is drawing current while its working) This time you get lucky that storage cap have bleeder resistor. If that is not the case (as it is for many chinese PSU) you could get high voltage for days at that capacitor and your methods will not detect it. So ALWAYS measure voltage at the big caps. If there is residual charge, use high wattage resistor, 1K or lower to discharge capacitor safetly.

[@jonnymakers9560]

Spot on bro. you are correct!!

[@TheKukunuku]

my thoughts exactly

[@Tronicsfix]

Yes, you are correct. I did it totally wrong in that shot. I'm adding this to my pinned comment.

[@kresimirpecar4925]

I once got bitten by storage cap... And that was 470 uF 450V beast charged to 390VDC. I assumed cap is discharged... It was very painfull assumption...

[@timehunter9467]

Would that be a “full bridge rectifier”?

[@boomsharkboom]

Wish you would've shown how each displayed images in dark and lighter rooms. Sometimes the bulbs need to be replaced eventhough they still give light. The bulbs Don't last for ever. Enjoyed the video.

[@absenteeatom]

If you go into the menu, you can see the lamp hours

[@boomsharkboom]

@@absenteeatom but still would of hoped he would of shown the brightness of the lamps. Lamp hours are guidelines not the true physical shape of the bulb.

[@Keith1210]

​@@boomsharkboom And also lamp hours can often be reset so you may not get an accurate account of the number of hours if someone reset the device before selling.

[@Tronicsfix]

It's hard to know what testing to include in these types of videos. Usually the more testing I do on camera the less of the video people watch so I usually minimize the testing I show. I agree that if I were to sell these as used and tested then I would need to test them much more extensively. Anytime I don't have time to test something fully I sell it as untested so the buyer knows what to expect.

[@TheKukunuku]

@@Tronicsfix I bought a few for 60 euros and and repaired them. Most of them had dust in their optical part because the filter had crumbled because of bad material, some had thermal cutoff fuses blown and some sony ones had a faulty chip on power supply. Anyways, its important to check the image, that its not dull, because of something in optics, like dust or that the colors are not off, sometimes there is something wrong with the LCD-s.

[@owainjones2643]

I'm loving the variety on your channel at the moment. So interesting

[@Tronicsfix]

Glad to hear it!

[@McDaaniels]

As many others mentioned I would have liked to see more testing on these. Output light is not equal to a good projector. Especially on those with loose zoom/focus rings, check if the image is sharp. If you think viewers find this part boring include a chapter to skip to for those kind of viewers

[@ΚώσταςΚοζαδίνος]

I remember that one control panel we had onboard made this buzzing and the cause of this was the fan. So check it before you sell it. It may cause overheating after like one hour.

[@JulianSauco]

Yup. When lamps explode some glass shards get stuck in the fans, causing the projector to buzz and eventually shut down. Some compressed air and contact cleaner will work fantastic.

[@HellfireCignus]

You had one screw that fell out in the one projector that had never been opened. That sometimes happens when they are mounted to a drop ceiling that has airflow above it. It causes a vibration in the projector that you can actually see. After years of vibration the screws can loosen or fall out. I work in a school district and we deal with this sort of thing fairly often. Great video!

[@denisdeseneaza1724]

Warning: falling projectors ahead

[@marcusdamberger]

Wow, top tip there. Good to know!

[@martinconnelly1473]

I have an upside down ceiling mounted projector (different make) that got this vertical bars fault with a repair that followed the same repair path, open up, exercise the connector, screw tight, close up, all good.

[@tafsirnahian669]

Dude don't use locktite. Its gonna happen again.

[@EmiAntoinette]

literally watched this on an optoma projector. it's nice to see the bulb replacement process for when that day comes. love the videos!

[@Tronicsfix]

Nice! They made lamp replacement easy.

[@maximomauriz756]

Love you channel and videos bro! Sometimes you're very lucky and sometimes your repair methods are mind blowing. Top content on this platform.

[@Tronicsfix]

I appreciate that!

[@timehunter9467]

The “broken” ones with that ring coming off looked like user error to me. Seeing as it click on like that makes me think they turned it a bit too hard and thought it was ruined.

[@itsmesb4399]

The discolouration is from heat, very common with BenQ and Optoma projectors, as well as some Epson models. They tend to run hotter than I like.

[@pro-storm4951]

you can't determine weather the projector works without looking at the image quality, testing it on a close up piece of brown glossy paper won't give you a clear enough image to see any image errors, missing pixels

[@PaoloMarcelli]

2:05 Even a lot of Epson and other brands of projectors replacing the lamp is just a matter of removing one screw on the cover and one screw on the lamp itself. I had an Epson projector that used a screw that could be turned by hand, didn't require any tools.

[@RonnyKnots]

Hi there, great channel!! Wouldn't it be pertinent to compare how all these look like when projected onto a screen or even a wall? Some projectors show problem areas or differences even between the same model, or would that be more lens dependent, and so, not much you can do about it? I'm interested to see if any of these come back after selling them

[@Tronicsfix]

I generally don't test everything on camera as that would be very boring to watch. In addition, if I don't have the time to fully test an item I will sell it as untested so the buyer knows what they are getting.

[@DangerousDevilOfficial]

Man, these fixes are kind of half assed like others have said. These should have been hooked up to inputs after the repairs and run for at least the length of a two hour movie each. Then run a video game on each for another hour. At that point, if everything checks out heat and smell wise (besides picture, color, brightness), then you can feel pretty comfortable they are fixed. I have owned Optomas multiple times. And sometimes they run fine for an hour or so. Then quit. Things like bad colorwheels. Bulbs that dim after they heat up, ect.. Optoma is not a real dependable brand quailty check wise IMO.

[@brandonmakridis1565]

I'm curious about your test and how you determined 6-7min is sufficient to call it good. I'm no expert, but I have a couple old projectors I was trying to get working and they don't act up until 25-35 minutes of use. Maybe those are a bit different since they are older though.

[@charmio]

Random Tech Tip: When you have a batch of identical things to repair, always turn them all on and record each of their symptoms before even thinking of taking the first one apart. Then group the ones with similar faults together and work on the biggest group first. Also, always label every single part you remove so you can trace it back to the unit it came from.

[@meatwad74]

you should check out the lamp hours before you sell. It’s usually 3000-4000 hrs before u have to replace. I replaced my benq lamp with an original for $170. knockoffs can go for $70. that buzzing and smoke can be because of that. buyers will want that info

[@MagikGimp]

I was going to say. It usually reports it on the GUI. A lamp can be a lot of the cost so worth watching out for.

[@meatwad74]

@@MagikGimp reports on gui and keeps notifying u once hours are up. You can keep playing with some tricks but that’s dangerous for the unit. one friend had his bulb pop inside the unit

[@mikixyz123]

@@meatwad74 my classroom's projector had a filter clean notfication. I think it was a NEC projector.

[@rogermohammed86]

Is anyone going to talk about the fact that he tested the AC terminal and both ends of the fuse for voltage? when he should be testing after the bridge rectifier for voltage on the DC side.

[@kriswillems5661]

Yes, that was just weird....

[@2DSwagGod]

wtf was he doing lmao 💀

[@MrGenie23432]

Maybe additional checks but worth noting that most modern power supplies do not have bridge rectifiers as they are too inefficient especially for standby power requirements for energy efficiency.

[@IanWatson]

Ooo, I like the added graphics showing the prices and the product names. Nice addition to an excellent channel.

[@Tronicsfix]

Glad you like them! My editor added them.

[@THE_CARBON]

@@Tronicsfix ok

[@slinkytrips]

Those speckles on the image are not from dust on the lens, that's the DLP chip that is starting to fail. The easy way to tell is to adjust the focus, if the speckles rotate then it's dust, if they are stationary it's the DLP chip. You will find pixels both stuck on and off, basically that projector is trash. I wouldn't be surprised if the rest also suffer from that issue as they are all DLP and Optoma brand are know to use the low grade chips.

[@saYanoo]

As much as I like your channel, you didn't check properly if these projectors are actually OK. What about inputs? Speakers? Picture quality? Remotes? Lens function (focus, lens shift if applicable)?

[@jonaszprzybycien6545]

I'm suprised how easy easy this was since projectors aren't excatly known to be servicable with all the properitary parts. Also the lamp swap being this easy is cool.

[@MrGenie23432]

The lamp has to be easy to replace as it is a serviceable part that wears out and even has a count down timer built into the projector that will warn you when it needs replacing based on hours of use.

[@ChakatNightspark]

Now are you just checking the price on what people are SELLING THEM for. OR are you actually Checking the SOLD section. Also ones that you actually Fix. IE change out part, or Re Soldered I Hope you are putting that in the Desc. when you go to sell it. Plus Refurbished Items also tend to sell for LESS then Retail/new or just used working items.

[@stevesteve8098]

Your way to check the large cap is incorrect!!!!! the correct way is meter onto 400v DC then PROBE solder joints on BACK of board for the cap. (i've seen intermittent connections on large caps, due to their bulk breaking them loose, but then coming back online when the board is man handled...) also why would you check for voltage ACROSS a fuse that is not mains powered, that is a resistance check for after the board is validated. as well as checking the ~0.47 X2 above the fuse, it won't kill u but it will give you a nasty nip.

[@kamoboko86]

Hydrogen peroxide and a UV light will remove any yellowing on plastic.

[@Ebolachicken]

I was going to say the same but maybe he don't want to spend the time on that.

[@Thalacruise]

@ tronics when useing a projector pls let it cool down while its pluged in other wise it could burn the hot lamp

[@FixitFrank]

FYI #6 is the color wheel failing.

[@Mr31Chris03]

have a look on the color wheel (only to find in DLP projectors) somtimes the ball-bearing dies and this could be the buzzing noise i had such a problem in my acer projector it sits right between the lamp and the very beginning of the light tunnel and for the lamps you cant really tell if a lamp is good or not by looking at it the lamp driver board has a complex voltage and current parameter program and it will monitoring voltage and current used by the lamp during start up this kind of lamps need low current at the beginning to warm up savely but the voltage and current is getting up after a while and then it gets brighter but after a while the lamp will have a constant current mode but the voltage can stil vary if the lamp is getting older the normal voltage rises and if its out of spec you will get a lamp error keep in mind the logic of this board can only measure it when the lamp is in full power mode (warmed up) that means if you have a bad lamp it will kick of at the very end of the warming phase or even after hours of being on due to rising voltage this is caused because the arc in the lamp needs more voltage to stay stable due to rising preasure inside the bulb by vaporising metal

[@Kenjitsuka]

Nice new animations!!!

[@Tronicsfix]

Glad you like them!

[@morganlittle8404]

Someone probably already said it, if there is a Arc lamp in number six, I haven't found the spec sheet for it but high hour arc lamps produce a buzzing sound. (I have an Epson that does it. $150 lamp vs $300 tv... I no longer use the projector)

[@JakeJoris]

Buzzing on any projector isn't good. The most common cause for a buzzing noise is a failing color or phosphor wheel.

[@morganlittle8404]

I was going off what I know from personal experience, I would not have thought about that.

[@MrGenie23432]

Those are pixel shift projectors it is a know side effect of the pixel shift technology as the DLP is being mechanically shifted 240 times a second. They often have a quiet or silent mode that turns it off but you go from 4K to 1080P as you disable the pixel shifting.

[@FixitFrank]

@TronicsFix Thanks for the shout out. Let me know if you ever have any questions!

[@Tronicsfix]

Will do!

[@-never-gonna-give-you-up-]

15:47: that is very loud buzzing! Me: enjoying the background music *ahh yes buzzing*

[@amrk4570]

Such a great video. Not a fan of background music though, it’s would’ve been better without it.

[@Askaly]

It took me the whole video to realize you were talking about CIGARRETE smoke damages. I thought something inside burned

[@castleladpaza76]

Heat from the lamp can cause smoke damage from the plastic its made from I remember people alway thought Nintendo consoles went that colour because of cigarette smoke when it was the plastic it was made from.

[@JosephQPublic]

@@castleladpaza76 - UV exposure I think?

[@JoshuaPare]

quick question cause i have been asking around i just replaced both my joysticks on my old xbox 360 remote and when i test it not in game it shows everything works fine but in game it thinks the trigger is being used and the left joystick thinks its being pushed down i have now tested everything from the schmatics like the traces those are good and the joystick movement is good i have no clue why its doing that and also no one online seems to know either

[@chriseyes20]

Idk maybe a bad part or something got hit or messed up while repairing them is all I can think of sadly but even then it’s hard to say not an expert though so sorry

[@JoshuaPare]

@@chriseyes20 guess what after doing some research and thanks for responding i found out that some xbox controllers have paired joysticks so that means its a 50/50 chance the new joysticks will work with the board cause i rechecked everything and its all perfect conections

[@brucejoseph8367]

Seems all too easy to me and they are not fully tested. I don't believe these projectors weren't looked over by a technician before being sold as faulty.

[@rekap69]

I love your vids but, How come you call these fixed if they aren't tested properly?

[@drewdoe3033]

I bought 6 broken russian tanks from Ukraine - but can I fix them and make money?

[@Christophersanchez1326]

I found a projector in a dumpster, it still had a property tag on it.. Gave a call and yup it was trashed.. Still works but has some pixels problem on one side. Works for me. 😁

[@KorAllRBare]

Power Supplies rely on Smoothing Capacitors, Long story short when they fail, Mains Power supply buzzing or hum becomes more inherent.. So without actually being there, I would suspect that Buzzing/Humming Sound along with evidence of Smoke, has me guessing one of the main Filter capacitor/s indeed went up in smoke.. APU I dropped a 👉👍👈

[@MrGenie23432]

No those where pixel shift 4K projectors. They mechanically shift the DLP chip 240 times a second. Hence the buzz.

[@KorAllRBare]

@@MrGenie23432 And with all that switching "via the DLP Chip" the supply line would need filtering, ergo the filter capacitor, filtering the noise would already be out of spec and thus need replacing..

[@MrGenie23432]

@@KorAllRBare I am an electrical engineer I know what you are getting at but the buzzing is literally due the mechanical movement of the part at high frequency. I use to own a camera that had somewhat the reverse and had image stabilization by moving the optical sensor before digital imagine stabilization became the norm. It made a similar buzzing noise as it attempted to counter act my micro hand movements. You can filter the power lines all you want when you have a mechanical movement at high frequencies it will make noise. Slightly more expensive projector do a better job of insulating the acoustic noise but it is still generated.

[@KorAllRBare]

@@MrGenie23432 You know going over this, I am seriously left wondering why an expensive mechanical method was relied upon in the first place, electronically it would be far more reliable ergo superior and the bonus would be the loss of a very annoying and perceivable vibration, surely it be a Chingy Thingy..

[@MrGenie23432]

@@KorAllRBare it apparently works well enough visually and the reason people put up with it is that in order to do true 4K without this method you are paying about 4 to 5x the price and up. Most people are just not willing to pay the extra price. Plus depending on your setup the projector may be far enough you never hear it. Plus you do realize that DLP is by its very nature mechanical mirrors being moved creating the pixels.

[@ROBOT1990s]

All fixed without any spare parts 👏👏👏

[@thegaminggoblin1197]

Not sure if you'll see this but I have a broken 2015 New 3ds xl that I would love to donate to you. The 3ds was given to me by my little cousin. I tried repairing it my self but was unsuccessful. The bottom screen was replaced but upon turning on the system after it was replaced, it clicks, and then turns off.

[@Tronicsfix]

Sure, you can use the contact form on my website to contact me. TronicsFix.com

[@mattm.6008]

Has to be the easiest 3k u have ever made lol

[@Tronicsfix]

I'll probably get less for them because if I don't have time to test them more extensively I'll sell them as untested which will mean less profit but I sometimes just don't have time to test extensively.

[@M-Guitars]

Thx for mentioning a small channel like FixitFrank. I already knew his channel. Needed some information on a projector back then. :)

[@Tronicsfix]

He does good work

[@darkalligator]

Smoking what a horrible habit.

[@blazinthat7439]

If you dont start fixing stuff you bought your wife is going to get pissed.

[@awilliams1701]

a broken lamp is considered a disposable item. They are designed to be replaced. So a projector wouldn't be any good if it wasn't easy to replace. They are all like that doesn't matter what the brand is. I used to do IT. I've seen a few brands.

[@mikeanderson1994]

Amazing video Steve as always i really love the variety on the channel keep it up bro 👍👍

[@Tronicsfix]

Thanks! Will do!

[@Mikayu1337]

Buzzing noise is usually Pixel Shifting

[@tOSdude]

a faster diagnostic check once you had the known good supply installed would've been to pull the lamp door and see the behavior, if it matched the previous behavior you know it's probably that cable

[@jensmander1223]

those are the cheapest trashprojectors ive ever seen

[@torridice]

Can we get an update on the actual sales? Nice vid!

[@Cl-Lego-Studios]

You always inspired me to do repairs thank you for the inspiration

[@Tronicsfix]

Glad to hear it

[@filenotfound__3871]

You check for remaining charge in the power supply by meshuring the voltage across the capacitor contacts, not the fuse. Be carefull with that. One very importhant thing you have to check with theese prijectors before you sell them is picture clarity and dead pixels, very common fault.

[@marcusdamberger]

He's selling them as untested, buyer beware.

[@filenotfound__3871]

@@marcusdamberger but why not just test them and sell them as working?

[@Group-935]

Wow! This is the earliest I have ever been to a video.

[@Tronicsfix]

Thanks for watching!

[@Group-935]

@@Tronicsfix Your welcome sir.

[@vueport99]

Where did all that smoke come from?

[@adiposerex5150]

I hope you do get that cash! Love this channel.

[@Tronicsfix]

Glad you enjoy it!

[@krazytaxicabbie]

You deserve a mil…oh wait…you do have a million subscribers! Rock on!

[@Tronicsfix]

Lol!

[@LeviHeizer]

Are you related to the guy who does Project Farm? Because you guys have the exact same voice.

[@Tronicsfix]

No, but he seems like a cool dude

[@12345.......]

Movie night at Steve's place

[@Tronicsfix]

Lol, I need to set one of these up at my place!

[@Dtr146]

Even if you did fix all of them. EBay takes what 15 to 20% now? And shipping those would be 15 to $20 each. So that's 800 off of that 4,000 and 120 for shipping alone.

[@maddi04]

why would there be Voltage at the fuse like that 7:08?

[@CocoaEm]

also why did he measure at the power jack itself. Thats before the bridge req when the cap lives after. Should always directly measure the cap.

[@Tronicsfix]

There are very large capacitors on this power supply. Capacitors store a charge for (usually) a short amount of time even when you unplug the power cord. This large fuse is on the main power line and connected to the capacitors. If there was a charge in the capacitors there would be voltage on this fuse. Since there was no voltage that told me that there was no charge in the capacitors and that the power supply was safe to work on. EDIT: As several commentors have pointed out my method for testing the voltage in those large caps is wrong. They need to be tested right on the legs or the capacitors themselves.

[@maddi04]

@@Tronicsfix just wondering, but the fuse is "in-line", so that would be like measuring at 2 places on 1 wire. I get the capacitors or plugs as they are always Negative and Positiv or Live and Neutral

[@CocoaEm]

@@Tronicsfix you measured with both probes on the fuse. So you were trying to measure the voltage difference of the fuse itself. Which is not exactly what you intended to measure. Black probe on ground next time. That could have gotten you killed. Always directly measure that cap.

[@mistersunny3636]

@@Tronicsfix The fuse is a short cirquit. You only have significant voltage at the fuse when it´s blown.

[@wendigo2k]

Almost all beamers have these easy to change lamps because the lamps always have a certain life time. They also almost always have similar casings for the actual lamp and inside those cases there's almost always the same lamp which can be switched. At least that's what I'm able to fix at work without a professional like you :)

[@mariakyriakopoulou1376]

I like projctor videos

[@castleladpaza76]

Did u teat these after repairs to see if the screen size is correct and do all the ports work correctly and do they work with other devices like games console or dvd player

[@Tronicsfix]

I'll either test them more extensively or sell them as untested. Either way when I make the listing I'll be honest with the listing so the buyer knows what to expect.

[@djashley2002]

In my experience the buzzing could either be coming from the fan (most common) or the colourwheel actuator (can be trouble). If it's really bad it's often worth sticking a finger on the fan casing to see if there's any severe vibration. If so, it's not too bad a job to replace it.

[@dontakeshit]

Could be coil whine from power supply too

[@marcusdamberger]

Those last two were 4k, they use e-shift Pixel shifting technology to generate 4k resolution from 1080 panel. i.e. the panel shifts over slightly to generate the other half of the pic, creating a full 3840x2160 picture. Only Sony and JVC (if I remember correctly) are the only native resolution 4k projectors that use full resolution LCD panels. With 4096x2160 on their panels. But they cost a ton more than these do.

[@MrGenie23432]

@@marcusdamberger yup and I believe these models do just under 240 shifts per second so hence the low buzz.

[@chasefournier]

Great video Steve!

[@Tronicsfix]

Thanks!

[@xiztence]

I'm always inspired when watching your videos :)

[@Tronicsfix]

So glad you're enjoying these. Thanks for watching

[@rp42069]

I'd never spend $1000 on ebay for something I can have new with warranty for $600 more.

[@Asdayasman]

Worth mentioning these bulbs run turbo hot and you're meant to leave the projector powered and in standby at least until the fans turn off, otherwise the bulbs can melt themselves with the leftover heat and that's not repairable for any reasonable cost. Gotta replace them then.

[@punjabier8]

hmm makes me want to repair my projector i got from my job it turns on fine but it has like missing horizontal lines anyone here know where to start?

[@Asdayasman]

@@punjabier8 Don't reply to my comment if you're not talking to me, boomer.

[@TehJumpingJawa]

Not watched the video yet, but from my experience there's no money in repairing projectors. Their 2nd-hand value is tainted by the fact that they wear out, most of their modular components are intrinsically irreparable, and replacement modules are expensive. :edit: Having now watched the video, I think you were extremely lucky with your purchases. =)

[@DISOPtv]

Didn't test any inputs.

[@as5who13]

On screen he may not have, in a lot of his videos he will say " I'm going to do more testing off screen and if I run in to any issues we will com back to this on" he really only shows what the issues are and how he fixes them. If you watch a lot of the time he will come back later in a video with one that the main issue was fixed to go over another issue he encountered off screen. He's doing 6 projectors if he showed every detail of every test the video would be slow and boring and he would lose viewers.

[@baperacks-com6801]

Didn't clean inside either 🤣wanting 900 500

[@kriswillems5661]

You were testing for renmaining voltage on your electrolytic caps on the AC input and the fuse. Neither method works. You have to check on the cap.

[@Abdullah2460]

Cool 😎

[@franzusgutlus54]

I bought a high end 4k beamer once and had issues with it from the beginning. It just turned off after a while for no obvious reason. Leaving it on for 5min was not a good test to see if it actually works. I would test for several hours with video signal going in, as this is what it is supposed to do.

[@leeartlee915]

I use to work in an IT department and these things would go belly up all the time (not these models but projectors in general). The problems would be so varied that sometimes we could fix them in like 2 mins. Other times, we’d have these bad boys back in our shop for a week and couldn’t diagnose the problem. I consider myself pretty handy but this type of item would stump me a lot.

[@reddragon27284]

My god, that is NOT how you check a PSU is safe to work on - you MUST check the main filter capacitor!!!!!

[@Brian-mp2mv]

I've got SIX FujiFilm S7000 cameras you can fix, and keep! All have different problems. Just send me 1 working camera back, keep FIVE😎👍

[@home1927]

new video yaaaay

[@sagebrushcountry]

I saw an advertisement for the cleaner degreaser “KH-7”, it can be purchased at Walmart, it will remove baked on grease and grime

[@SidneyCritic]

Did he input a signal, because you couldn't see if that was working on that small out-of-focus brown screen.

[@FRPlayerOne]

Just imagine TronicsFix and Doug DeMuro having a conversation ... 0.0

[@LucasMIDI]

What kind of bulbs did the projectors use? LED or Mercury vapor?

[@ericbechler9903]

Nice Steve 😃

[@sarcasticdark]

Those looks expensive

[@Tronicsfix]

Some of them are!

[@mychaelperry]

Where would you recommend to sell/trade red light projectors? They could be used as parts or repaired. I do not have the know how to fix, but saw this video thought I ask. I am in Stamford Connecticut. Epson w1261 and Epson vs240 units. 5 or 6 each of them.

[@HuntersMoon78]

I recently bought 3 projectors, 1 LED and 2 DLP for £15, they all work perfectly too which surprised me.

[@Stripcherry3]

Where did you find them so cheap?

[@JakeJoris]

DLP is the name of the chip which creates images and LED is the name of the light.

[@HuntersMoon78]

@@JakeJoris I know, 1 has an LED light, the other 2 have halogen lamps.

[@HuntersMoon78]

@@Stripcherry3 Local flea market.

[@laboratorioassembler]

I will no touch lens with IPA.... all lens has some special treatments ... that doesn't need to be removed.

[@wossle73]

9:20 EWW! (and I'm a Smoker) I Just GO Outside, It's a Horrible Habit and I can Smell it in my own Clothes! AND smoke that JUST Blows Away in the wind? It DOESN'T, IT can seriously CLOG up AND eventually Destroy your Expensive Electronics!

[@johnlarro6872]

Jumped on eBay after watching this, and ALMOST bought an Epson projector that was marked as "faulty", going for around $80 but worth $400 if I could fix it. (Not that I'd sell it - I've wanted a projector for YEARS!) But noticed it didn't have a remote, and - if it's a dead power supply, it's not like I have another on hand. :}

[@crunchystrat2324]

The original price of just one of those was $1200. I know because I have an optoma uhd30 I think? gaming projector. Great projector.

[@crunchystrat2324]

By the way the lamps getting hotter than a car’s heated seat is usual with optomas, mine does the same thing.

[@jarateman6427]

Did you check the audio on any of them?

[@ExecutorQ3]

what? who on earth uses projector speakers... it's like pissing on a wall in gallery... the whole "inbuild speakers" thing with projectors is the same bs with flashlight and their "3rd function - strobe"... all you want from flashlight is to turn on/off, not to have 75/50/25pwr/strobe modes you have to cycle thru... it's just useless bs added so you can use it in useless advertisement.

[@misterbonzoid5623]

After 14 years making a living repairing mainly audio amplifiers I bought a new £3,500 Dell S718QL UST laser projector for the college where I work in 2018. While soak-testing it I noticed a faint yellow staining on about 20% of the middle of the image on the white test mode (you can get it to project various single colour rectangles). Subtle but faulty and not a dirty lens. After a long phone call to one of Dell's engineers in Scotland they accepted it was faulty and replaced it. Most people wouldn't have noticed the problem in a college, although a home-cinema owner might have.

[@MrMickCG]

To solve the clicking noise on the UHD50X it would be worth it to replace the color wheel, especially if the project has seen heavy use. After I replaced the color wheel on my Optoma 141X the projector was super quite and the colors were a lot better.

[@danielelliott3315]

Looking to do this on one of my projectors. Seems to happen to all projectors eventually.

[@MrGenie23432]

The noise was the pixel shift technology not the colour wheel

[@benjaminbenjamin8392]

i had multiple different 4k optoma eh-tw6150 that had coil whine a verry irritating beep while in use. no source connected and it does not have a beep so as terminator juice said may not be fixed. especially if there are no devices connected.

[@a2cryss]

We have bought 7 Optomas that look like the first 2. 3 are dead but all are damaged. They do not ship well. One had the lines and a partially unplugged connection like the 3rd one(fixed). One has a fan noise. 3 have broken light reflectors (fixed with bulbs from dead units). 2 have have the metal nubs on the buttons broken off (fixed with built up crazy glue on the plastic of the button). Some have broken case plastic. Our instructors wanted bright and high resolution so we got 4000lumen 1920x1200 units. We need a more rugged replacement.