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Question

Panasonic TH-50PX70A 50" Plasma TV

by Apr 1, 2015 12:06AM PDT

Hi, my TV has developed red swirls around faces and background. This happens after about 30min of turning the TV on. It seems that the red color wants to take over.

Has anyone had the same problem, or could suggest a fix
The TV works fine other than that fault..

Thank You
joojies

Discussion is locked

9 Posts
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Answer
From prior questions
by Forum moderator Apr 1, 2015 2:04AM PDT
https://www.google.com/search?hl=en&as_q=plasma+tv+red+swirls seems to point to non-user serviceable areas like power supplies and more.

But the issue of heat is something we might be able to control. Hopefully it was never put in a confined space. One time I found one inside a recessed box and my forecast is they would burn up one a year in that box. You can try canned air on the vents and be sure it is not in some overheating box.

There's also some models that a tech can adjust drive voltages but that's not something we do. Call it in and get estimates.
Bob
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Overheating
by joojie Apr 1, 2015 1:09PM PDT

Thanks very much Bob for the quick reply & advice. The TV has always been on a stand in an open room, and this problem has only just started, the common factor seems to be almost exactly 25min before the red starts to take over the screen. I notice that when an ad has no red the picture is perfect.
I am on a military service pension & not in a position to replace the TV so I am pretty desperate to find a fix.Apart from that it is a great TV anyway.

Again Thank You

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Try a test.
by r. proffitt Forum moderator Apr 1, 2015 1:19PM PDT

Point a fan at the back of the set. If it changes then we know it's some heat sensitive component.
Bob

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Overheat
by joojie Apr 1, 2015 2:15PM PDT

Ok i will do that now & get back thanks Bob.

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Overheat
by joojie Apr 1, 2015 6:59PM PDT

Bob, I have a fan running behind the TV after removing the back panel, and it has been working for the last 2hrs without a problem.

Does that point in any direction to you

Thank You

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Only that....
by r. proffitt Forum moderator Apr 2, 2015 1:03AM PDT

Only that something is sensitive to heat.

What it did do for us is to dismiss that it was some TV firmware issue. Sorry but that's about all it told us.
Bob

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Overheat
by joojie Apr 2, 2015 11:20AM PDT

Ok Bob, for the moment it is running without the colour problem, but has developed another where it distorts the screen to the stage where u cannot be seen.The same as a bad ariel connection. But only on one channel..now that is strange.

Once again thanks for your kind input,

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Sounds like the end is nigh.
by r. proffitt Forum moderator Apr 2, 2015 1:25PM PDT

Something's going south. Sorry but all this tells us is something is going. Plasma sets have quite a few boards. You may get more guesses at AVS Forums but for sure, there's a board change on its way.
Bob

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Overheat
by joojie Apr 2, 2015 3:23PM PDT

Yes I guess I will just wait and see. I will keep u posted so that others with a similar problem may benefit.

Thanks .

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