Fix White Spots BenQ MX720 Projector

My goal is twofold: to show you how to nab a NICE projector cheaply and then show you how to clean the white dots or spots. This model and others are selling cheaply on ebay due to having dirty optics. Clean it up and you're ready to rock that man cave theater! Today we take apart the MX720 and show you how to clean it.
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[@DudeOfTheWeek]

Than you for the great guide! I just did this process which was 95% the same on my BenQ W1070! Thanks a bunch! The spots are now gone from the view and the image looks better than ever!

[@DetroitNerd]

I don't own a projector and have zero reason to be watching this but here I am lol

[@databits]

Thank you for being here Michael, you are a loyal fan.

[@KlasicRock]

Man I wish I found this video yesterday. I did a tear down. And didn't take off the second metal plate. I struggled to get the lens etc out. Got as far as the color wheel and thought that was the issue. I had white lines down the screen as well as white dust particles or imagies on it. This helps a bit. Thank you.

[@frisbeehousepiper]

Thanks so much for the video. Followed it step by step and now my projector is like new. I was a bit more aggressive on the cleaning aspect however. I have experience as a camera assistant and had more options to clean the optics. I used a combination of Panchro lens cleaner, Kimtec wipes, q-tips, and canned air to clean the entire interior of the projector. I used a camera sensor cleaning kit to clean the DLP chip. That’s the location of the image altering dust and therefore the most important. If you don’t have that fancy kit, scotch tape on the chip will probably be just fine. Thanks again!

[@databits]

Another brave technician! Good job!

[@smolbodybuilder1602]

I know it’s a bit late but can I use any ole cleaning kit? I found those sensor cleaning swabs on amazon maybe I‘ll try these. Watcha think

[@nathanoutreman927]

Excellent video ! Tested on a Benq W1800, principles are the same, hardware and mounting plates are a bit different. Don't have to worry about those white spots now !! :D BIG THANKS !

[@databits]

Glad it helped

[@kutasimusic]

Many thanks for this guide. I managed to get rid of those white dust "spots" from my Benq W1070 (similar machine). It took almost a day to clean everything, but my machine shines again now. :)))

[@mohamed_a.elmohsen]

Hello It's easy to take off parts of machine I have a white dots also and need to clean my machine thx ..

[@DudeOfTheWeek]

How did you clean the dlp chip? The same method used in the video with a microfiber cloth or did you use some other method?

[@yolkum]

Just ran into this issue with my projector and your video made the process of cleaning extremely easy. Thanks for sharing this.

[@DudeOfTheWeek]

Did this work for you? Did it solve your issues with dirty projector image?

[@yolkum]

Yes it did. Still working perfect since this fix.

[@DudeOfTheWeek]

@@yolkum Thank you for the quick answer! Did you clean it the same way he did in the video or did you use some other method? I have noticed some small dust particles in different backgrounds on the projector so I am going to try this on my BenQ W1070 and see if it fixes it. Any tips you can give from your experience?

[@joshuajanes]

​@@DudeOfTheWeek@DudeOfTheWeek - I have the BenQ W1070 Digital Projector. I had it for years, and the bulb exploded as it approached its final hours of use. After replacing the bulb, there were white dots all over the projection. I followed his cleaning technique and put it back together, and it worked great. All the spots were gone. The screen was clear and looked great again.

[@DudeOfTheWeek]

@@joshuajanesThank you! I have bought some more microfiber cloths just in case and think I will try this tomorrow or Friday! If I try it and remember to, I can maybe report back here how it went.

[@Acidmonk603]

Great video, thank you. Just had to replace my lamp and, when I got the projector hung back up, I had tons of little white spots everywhere. Thought it was the cheaper lamp I bought (a third of the cost of the original). Going to give this a shot.

[@databits]

It's a pain to do, but once you get the hang of it, you could do it again. Plus its fun.

[@Khyree_Holmes]

I think Digital Light Processing came out in 2003 or 2002! I remember those TV Shopping channels: "NEW! DLP TV...."!

[@Sphinx-productionsNl]

Hi, got an W2700, its like just over a year old, cleaned every part even the optical, that's no challenge for me because I have ONE little white spot/pixel, not much dust was in the whole machine, could this be DLP failure?

[@mohamed_a.elmohsen]

I have white dots on my machine canon LV wx320 how can I fix this issue if you plz ...thx

[@jeromedelahaye2725]

thank you, still helpful on a w1070

[@mhmrules]

@databits CBS tried the color wheel idea. See how that turned out?

[@jackyma0950]

What's the model of dmd chip?

[@Tatamata33]

Please tell me how to remove STUCK pixel?

[@RMoribayashi]

The very first color television systems had color wheels in the camera and the TV receiver. Imagine how massive and noisy the wheel needed for a 24 inch crt would be. I'm glad our living rooms didn't end up with 5 foot tall boxes with a screen in the corner.

[@RMoribayashi]

That color wheel is just about the same size as the one used on the last 3 Apollo moon missions. NASA was still using color wheels and vidicon tubes in their cameras when the Space Shuttle launched. CCD sensors couldn't beat the old technology until the late 90's.

[@fadzilahmnasir1107]

Did you watch Halt And Catch Fire. Its a tv series about 80's technology. I always thought about your chanel when I see that show. Great show

[@djpaul146]

I've got a viewsonic and mine has white dots it's the dmd chip

[@INSIDETHEPRISM]

very colorful and very weely

[@JuanchoCastilla]

Hi There thanks for the video I got a new DLP chip and replaced it but now when I turn it on it, it stutters for a moment and then it gives me a LAMP red light and no light comes up. I just got a new lamp and before this there was not problem whatsoever with the bulb. Can you please tell me what can it be happening?

[@anotherherodiesTV]

I believe you can do a lamp reset somehow

[@bryanbaskett4010]

Can this be Ceiling mounted? I have an older BENQ PE7700 that has been having issues, was thinking of upgrading.

[@databits]

Yes it can! Mine is!

[@SeanNeville-gc5pj]

I got BenQ MP525 ST , it works fine upright but when I put it on a ceiling bracket(upside down) it starts flickering like the colour wheel is going nuts. Any idea what is causing this?

[@databits]

Wow, no idea. Sounds like there’s an electrical short inside.

[@jameshunt2141]

i bought an optoma uhd 300x only to find my pc struggles with 4k youtube vids. sigh, need to upgrade my graphics card too

[@christo930]

Replacement lamps are 160 dollars! These things tend to have a lot of hours on them. They are used in corp training and ra-ra- sessions. They will sit there powered on for hours on end. The life is pretty good for a projector bulb though. -

[@user-sk5gy9pf7p]

I just took this projector apart watching your video and cleaned it all put it back together and now no power to the unit. Can you suggest anything that I may have done wrong to cause it to have no power?

[@smolbodybuilder1602]

did you fix it?

[@didzhej]

I tried cleaning DLP (ant mirrors/ lens), although I was sure it wouldn’t help and it didn’t help. That's all.

[@databits]

I cleaned three with good results. :(

[@didzhej]

@@databits in my case there are lots of white dots and very few - black ones. As I can imagine black ones is dust pieces ant they are our of focus, but those white pixels defect of DLP and they visible with magnifying glass on DLP matrix. And other notice: white pixels sometimes blinks (no all, few of them noticed doing so).

[@nitinadhav9719]

Nice 👍👍

[@pabloalfredolopezrodriguez7773]

Would anybody recommend me to vbuy this on ebay, a refubrished one to be more specific?

[@databits]

What is the asking price?

[@pabloalfredolopezrodriguez7773]

@@databits 179 dollars

[@rafenwulf]

Looking at the dirt that still fell out of the mirror housing, canned air might not be a bad idea. There's probably still gunk in there that may find its way onto a mirror or lens later on. And while you have all the optics out of the machine, might just as well use canned air to clean all the electronics, fan etcetera. Not a criticism! That's just what I'd do.

[@databits]

No, that's a great idea! Just remove the lens from the housing first to avoid blowing dirt back into it. Thanks for your comment!

[@dergoathighscore170]

What's the native pixel quality?

[@dergoathighscore170]

And how much inch does it project

[@databits]

www.projectorcentral.com/BenQ-MX720.htm

[@6581punk]

I think I have one a bit like this. It's 1080p though. I don't think I paid much more than £500.

[@databits]

Good price!

[@6581punk]

@@databits Yeah. It's been mostly used for PS3 House of the Dead. Using the PS Move and the PS camera, it tracks the whole projector screen well unlike the Wii. I have a 92" screen 16:9 and it works really well. Also have played Wii Sports Resort on there.

[@dvdemon187]

My collegue has a similar one to this I think, but I bet he's too lazy to actually take it apart and clean it, should it have these kind of issues. Still a helpful guide though.

[@databits]

Thanks. I've learned (with more tinkering since this video) that the DLP chip is the key. If it has anything on it, it shows on screen.

[@MuhammadDaudkhanTV100]

Good, ❤️🌹💯👌👍

[@databits]

Hooray!! Thanks!!

[@anglo-saxon9182]

I've got 8 now really ruins gaming in dark

[@vibingwithvinyl]

I don't think $1700 counts as very high.

[@databits]

Great! Can you buy me a new one at that price? I'll send you my shipping address. :)