Dell plasma question

[Rmasters3]

Picked up a 10+ year old Dell plasma about a year ago, and fixed it with some new caps in the power supply. Just recently it's begun to act up--the lower half the screen goes black.

This is usually after extended use--1 to 1 1/2 hours. It will flash back and forth with the picture occasionally returning. On/Off doesn't affect it.

Before I get into it--anyone have suggestions as to what to look for? I'm guessing some solid state device is overheating, but if there a common cause knowing would help.

[tom66]

Re: Dell plasma question

It would depend on who made the plasma panel for this unit, but it would likely be a controller board, Y-buffer or X-address board failure. Since it is intermittent, you may be able to locate the exact intermittent part with hot air (a standard hairdryer does a decent job)

[whiz62]

Re: Dell plasma question

I have a Dell with same symptom. I replaced some caps on power board about three years ago and then the bottom going black started a short while later. i could tap on back lightly and would straighten up. it is in garage now. when i get time i will dig into it. acts like a loose connection. it is a 43" samsung panel.