LG 50PC5D Verticle red bars

[TeamCanada]

Wow, I'm glad I found this forum.

My LG plasma started to show red verticle bars on the screen on power up. The bars are as wide as anything that is displayed, ie. if the "no-input" bar is scrolling across the screen, the bars are just as wide as the bar and moves with it. If it is changed to a tv signal, it will flash red bars along with the signal. It started by doing this for about 5 minutes and then I would get a clear picture. But it is now to the point that it will take up to an hour for the picture to come back on. I do get sound and once the picture comes back, it is like there isn't any problem at all.

Any suggestions?

[tom66]

Re: LG 50PC5D Verticle red bars

This is commonly a control board issue.
Can you show us a video of the problem?

[TeamCanada]

Re: LG 50PC5D Verticle red bars

I will do that tonight when I get home.

Thanks for the quick reply.

[TeamCanada]

Re: LG 50PC5D Verticle red bars

Tom, sorry for the delay, was out of town, but anyways, this is what the red bars look like. It is following the no-signal wording as it scrolls across the screen. Any ideas?

[johnboy1313]

Re: LG 50PC5D Verticle red bars

Refer to page 21 of this manual (page 24 if you type it in at the top)



It looks like you may have some maldischarge in there as well.

[tom66]

Re: LG 50PC5D Verticle red bars

You have a bad Y-buffer.

[TeamCanada]

Re: LG 50PC5D Verticle red bars

Y buffer?

Service manual show a Y drive top and a Y drive bottom as well as a Y_SUS board.

Which one would that be?

Thanks for the help, btw.

[tom66]

Re: LG 50PC5D Verticle red bars

Probably Y drive top and bottom. There's the chance that a bad Y sus killed those two.

[maggies]

Re: LG 50PC5D Verticle red bars

My 50pc5d is doing the SAME thing, did you ever fix the problem. Was it all 3 boards" I'm assuming I should replace the ysus, and both y buffers at the same time to be safe?
http://youtu.be/ZBBvaGkTpvk

[maggies]

Re: LG 50PC5D Verticle red bars

I figured it out. I fixed two tvs with the same problem. Both of them had bad y-sus boards. the upper and lower buffer boards were fine. I bought used boards on ebay for about 50-60 $ each, installed them(easy), and all was ok. Good luck!