LG Plasma Multiple Lines

[ibhangoo]

Hi there, new to the forum and I must say it is very impressive. Anyway, I have an LG 50PG30F-UA Plasma TV and it has various different lines on the screen. On the very bottom there is one horizontal black line that is approximately 3-4 inches wide. After searching around I assume that is the bottom y buffer that needs replacing. On the top half of the screen I get 2 lines that are 3-4 inches wide each but eventually start working. After about 15 seconds one of the bars go away and the other bar goes away after about 15 minutes. Whereas the bottom bar is always there no matter what. Any ideas on what the problem might be?

[tom66]

Re: LG Plasma Multiple Lines

It's hard to picture this, is it possible you could take a video, or at least some pictures?

[ibhangoo]

Re: LG Plasma Multiple Lines

Okay I took some pictures. In the first picture there is a black bar on the top as well as one on the bottom. I couldnt get the second bar that is at the top as it went away very quickly before I took the picture. In the second picture the top bar is gone after about 15 minutes but the bottom one is still there.

[tom66]

Re: LG Plasma Multiple Lines

Try reseating (removing and reconnecting) the y-buffer connectors which correspond to the blocks. Could be a loose connector. Otherwise I would agree with Y-buffer fault.

[ibhangoo]

Re: LG Plasma Multiple Lines

Just wondering if the top bar(s) could be a fault from the y sustain? Wouldnt the bars remain if it was a buffer fault?

[tom66]

Re: LG Plasma Multiple Lines

The Y-sustain does not discriminate between parts of the screen... it feeds the same signal to all bars.

[ibhangoo]

Re: LG Plasma Multiple Lines

oh okay I appreciate your help