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Cleaning lenses and mirrors on dlp

I have a Hitachi 60VS810. It is just over 3 years old. gets about 4-5 hours play per day. It has had the bulb changed about 6 months ago which restored brightness. At that time I noticed the face lens of the old bulb had a haze that could be wipped off. I looked in to the opening where the lamp is installed and saw that there was a haze on the surface of the 1 st convex lense. We wiped that off which improved the contrast and clarity of the image a bit. But we still noticed some haze between the lenses. The tech said there was no way to clean the Lense elements. Is that right? This is not a smoking home but my experience with projection TVs over the last 15 years is that mirros and lenses need occasional cleaning. What about the mirror system behind the screen. Can it be cleaned. What can I do to try and restore the original POP to the image that now seems weak and soft not bright and sharp as it was new. I spent alot on this set as you can imagine but the degraded picture quality is causing me to look at a new plasma. I know I should not have to be doing that yet. Thanks for your help.

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Re: cleaning lenses and mirrors on dlp

I have found a way to clean these, the mirror is very sensitive and doesn't have a glass coating like a regular mirror and if you touch it with your hand (or in my case my forehead) even the tiniest speck of oil will distort the picture but without touching the mirror you can use a new swifter duster, any sort of cloth or tissue will leave lint. So I dusted the mirror first in case any dust fell then I cleaned the lens and blew them both off gently with air and it works great.

Posted on Nov 06, 2009

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How to clean mirror and optics mitsubishi 73 dlp

You have to remove the lower panel on the back of your tv, then remove the light engine. Unhook the wires attached to the DMD board. Remove the DMD board. Remove the heat cink from the DMD board. remove the optical lens but don't touch the lens. There is a video on that shows the entire procedure. Takes 2 hours. The optical lens can be cleaned with an eyeglass cloth, same for the DLP chip lens. no wet solutions on lenses. Remove dust from other internal parts with compressed air in a can. Your picture will be clean and clear. Wear latex gloves and make sure you are grounded to prevent static electricity.

Feb 23, 2013 | Mitsubishi WD-73827 73" HDTV DLP TV

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Replaced lamp in 55vg825 approx 1500hrs ago & lately the picture has lost brightness compared to when the new bulb was installed. Is there another adjustment or is the bulb defective already? Past...


You are correct about lamps working or not, but that is the extremes. Over the course of operation all lamps lose brightness as the hours add up. All lamps will lose their brightness over time.

Typically lamps only last at best 6000 to 8000 hours. That is not long if the unit is used most of the day everyday. In addition the cheaper the quality of the lamp, cost and manufacture, the quicker they go down hill.

Assuming that you have a low quality lamp what you are experiencing is normal. You may be able to improve the brightness and clarity of the picture by cleaning the lenses, mirrors and screen. I have a tip at

This tip is labeled projection tv but is also appropriate for cleaning an LCD or DLP unit.

Thanks for using FixYa and for the great rating.


Mar 14, 2011 | Hitachi UltraVision CineForm 55VG825 55"...

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Dull/cloudy picture

If the set is 4-5 years old, it probably has dust on the lenses and mirror.
This can cause a murky picture.
If you can remove the front screen assembly, you can gain access to the lenses and mirror. Clean with a dry micro-fiber cloth very gently.
Hope this helps,

Sep 09, 2009 | Philips Projection Televisions

1 Answer

How do I get my TV open to clean color lights I have a Hitachi 42in projection tv

You can take the back cardboard cover off to get to the lenses on the picture tubes. Usually, if the picture is dull because it needs cleaning, the mirror should be cleaned. You can remove the top half of the back of the tv and the mirror will be mounted to the inside of it.

Jul 08, 2009 | Hitachi 53UDX10B 53" Rear Projection...

2 Answers

Hitachi 51F500 Cleaning

the trim on the screen pops off and behind that trim are screws that hold the screen in place...once you remove the screen you can clean the lenses and the mirror and maybe get a cleaner clearer image

Feb 18, 2009 | Hitachi 51F500 51" Rear Projection...

1 Answer

Mitsubishi 57" DLP. Replaced bulb, now picture is hazy.

Cleaning th mirror and lense will remove the haze. This oldel is much older that 2 years though.

Jan 24, 2009 | Mitsubishi WD-52327 52" Rear Projection...

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I have dull areas in my screen (rear projection Mitsubishi WD-62725) the screen is clean, should I clean the mirror an how.

Good Day, tomdebseth;

If these dull areas are soft ball in size and look kind of like fuzz balls, then more then likely the optical engine (light engine) is defective. This part is a bit pricey, $600.00 to $1,200.00. Since your TV is only 4 years old you should go to the manufacture and to get them to pay for this repair. A DLP TV "light engine" should last longer then that.

Good Luck, big IRISH. ps cleaning won't help.

Aug 01, 2008 | Projection Televisions

4 Answers

Cleaning projectors

You dont it is a specialist job please take it to an autherised service center, it has high level UV from when turned on with covers removed do not risk it, as it can blind you.


Jun 23, 2008 | Hitachi 50FX20B 50" Rear Projection...

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Old hitachi

the coolant most likely needs changing in the CRTs. Another possibilty is the mirror has become dull. use a damp soft cloth to clean the mirror then dry also clean the CRT lenses . Dont use windex. You will be amazed the difference just polishing the mirror can make in picture quality. Looking into the CRT lenses while they are on will tell you if any groth are present in the CRT coolant chambers.

Jan 20, 2008 | Hitachi 46F510 46" Projection HDTV

1 Answer

Projection tv

Yes you can safely clean tv, just remove front speaker panel and you should see screws holding up front prot. screen. Becareful not to snap screws. You can take screen out and there is a mirror that you can clean and 3 lenses.

Apr 01, 2007 | Hitachi 50UX57B 50" Rear Projection...

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