Question about Hitachi 51UWX20B 51" Rear Projection Television

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Hitachi 51uwx20b Picture appears normal, but there does seem to be a lack of brightness..I can bump it up to about 85-90% and screen get a bit brighter but not overwhelmingly bright..What might be the problem here?

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Have you taken off the screen and cleaned the lenses and mirror?
Clean carefully with a dry micro-fiber cloth only - no liquid.

Posted on Sep 09, 2009

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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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then read this toshiba problem and see if yours has the same problem go here

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