Question about Hitachi 50UX57B 50" Rear Projection Television

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Dirty screen but it is behind the outside screen.

How do you clean the spider webs out from behind the screen? On my hitachi 50 inch projection tv. how do you access the screen area to clean behind the front tv screen, I can see spider webs in the picture?

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Re: dirty screen but it is behind the outside screen.

I have the same problem. I can see spider webs behind the screen and would like to know how to clean it myself without a technician. Please help me understand how to do this myself.
Thank you,

Posted on Dec 07, 2008

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Re: dirty screen but it is behind the outside screen.

The front screen with the frame does remove from the cabinet giving you access to the mirror and CRT lens. Remove the speaker grill,remove the four screws on the bottom of the frame, then working underneath a corner proceed to pop the rivets holding the frame to the cabinet. It will seem impossible at first because you have to use a lot of force to pop each one out.When reinstalling,a rubber mallet may help popping each rivet back in (I am not kidding when I say they are tight) 

Posted on Oct 24, 2007

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I have a rear projection TV that I thought had a scratch as well. Upon closer examination and several attempts to clean, I discovered that there was a spider web behind the screan in front of the color projectors. I carefully removed the screen and gently cleaned the spider web from the screen. Presto no more scratches.

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I know my response is a while after you asked, but to clean the inside of the tv case is pretty simple.

Remove the bottom speaker cover...on this model you just pull it off. There is no clips or screws.

Once the speaker cover is off you will see the bottom of the screen, there is 4-5 screws on the bottom on each side....I think 4 in the gray plastic and 1 in a black metal strap. With all of those screws out pull out SLIGHTLY on the screen and push up. The top is held in with a down force clamp and you are just popping it out of that....It will pop back in once you are done.

Now clean the back side of the screen, the mirror and CAREFULLY dust off the lenses. I myself did not want to use any cleaners (to avoid streaking) so I used a new microfiber dusting cloth. My picture became brighter and the "crack" that I thought I had was just a dust web....

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well . there are 4 things that can cause this..
1= the outer screens could be dirty.clean with screen protector cleaner.Spray on cloth and not on outer screens.
2= outside lenses of picture tubes could be dirty.Unit can be opened .Outside lenses can be cleaned with a lens cloth .Do not use paper towels or cotton as this my scratch surfaces of lenses.
3= inside of picture tubes could be dirty.This should be done by a repair shop only(dirty coolant inside tubes)

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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.

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Clean inside of the screen? Spider webs?

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