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  1. #1
    ride a jet ski Tarheel_'s Avatar
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    Nov 2003
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    smudge on RPTV...driving me nuts..ideas?

    own a 2001 4:3 Hitachi 50" (50DX10B). During last hockey season i noticed near the center of the screen a light brown smudge spot. Not uniform, looks like a spill. Tried cleaning the screen and used S&V to calibrate again, but it appears to be burn-in or something.

    I've read many posts and see some who had bug droppings on a tube.

    Any ideas? Should i try to open and clean the tubes?

    If the screen isn't white, it can't see it....but for hockey, it sucks!

    Anyone ever opened a RPTV? Any other tests to verify burn-in?

    Gotta get ready for next season.

    TIA

  2. #2
    Forum Regular
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    Feb 2003
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    103
    I have a 45" rear projection Pioneer TV bought
    way back in 1995. The screen is removable but it
    hadn't been removed until a repair tech came out
    because the TV was having problems. He cleaned
    the back of the screen and the three tubes using just
    water and a very soft cloth. The diference in picture
    color and clairity was tremendous (this was done after
    we had the TV for 5 years,,, and you would be suprised
    how much dust can accumulate on the screen and
    lenses.

    If you can remove the screen on your Hitachi (carefully)
    and clean the back of the screen and lenses using just
    water and a soft clean cloth I think that it might remove
    the smudge problem and improve your picture quality....
    Good luck......vardo

  3. #3
    ride a jet ski Tarheel_'s Avatar
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    thanks vardo...
    makes me want to attempt it...wish someone would chime in on a website that shows how to do this...
    we shall see.

  4. #4
    Forum Regular
    Join Date
    Feb 2003
    Posts
    103
    Tarheel, do a google search on "cleaning a lenticular screen".
    Also distilled water might be safer than using water out of the
    tap, but I have used water from the tap at least twice and have had
    no problems (guess where I live the tap water doesn't have
    alot of minerals in it)...don't be afraid to give it a try....vardo

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