Question about Panasonic PT-51HX41 51" Rear Projection Television

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Panasonic PT 51HX41E flickering colors

Model: Panasonic PT 51HX41E
Chassis: AP820
Work done: Replaced (2) STK392-110 with (2) STK392-150
Issue: Sporadic flickering colors

I replaced the 2 convergence ICs, thinking it would be a quick fix, but to no avail. At least I upgraded from 110's to 150's! A previous tech had suggested that it was the "color board". TNPA2033S is the DH-board he refers to. The issue at hand is that the screen shows mostly black and white, with sporadic flickers of colors in various places at any given time. Customer refers to it as "psychadellic". When I reference this part in the SM, it says that it controls PIP PROCESSING, SPLIT, SEARCH, and
FORMATS.

Question: Has anyone had similar experience with this issue, and is this part the culprit? If not, any further suggestions?

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Ok her is a good test for u, bring up the pip on screen and see if the picture is the same as the main picture ok.now if at is it sounds like to me that u have a bad pip board that is causeing your problem u can bypass the pip u just need to jump the video in to the video out and sync out and in and remove the pip most of time i have found that the small caps go back on the board and u lose snyc and that is y your picture goes black and white with blinking color in the background. now the stk392-150 is a better chip then what u had in it but convergence problem has nothing to do with color snyc. i hope this will hp u marty

Posted on Oct 13, 2008

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