Question about RCA P52771AT 52" Rear Projection Television

1 Answer

Blue Halo and too much blue...

RCA P52771AT with PTK178LB chassis:I have a blue halo and from what I've read, it sounds like I need to replace the convergence ICs. Can someone help me identify these chips or circuit board? where can I get the parts?


Posted by on

  • randykbell Apr 05, 2008

    did the coolant before my post. I've since been told this model does
    not have IC, but a circuit board. any info on the board will be

    the picture attached doesn't really show the effect, but the whole
    screen has a blue hue and the left side of her face the blue halo.

    thanks in advance...


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If its a halo such as a glo you need coolant change in the CRT, if its like a 3D effect then you need new Convergence ICs. Can you post a picyure of your screen and I will properly diagnose it for you then be better equiped to help you properly.

Posted on Apr 04, 2008

  • Sonny Berry
    Sonny Berry Apr 05, 2008

    yes your model has ICs not the conventional type as used in other TVs. However they are difficult to change. I am trying to find a source for that module. Through Thomson/RCA its most likely no longer available . I will repost as soon as I find some info on the module.


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