Re: LG 50PA5500 No Audio Issue - Partial static video

Also, the new top buff board is not installed because I removed it to see if the screen image would change (show half an image) and I also wanted to test the IC's to make sure that an IC did not blow again. The board tested fine and the image was changed in anyway. I just need to reinstall it at some point.

Re: LG 50PA5500 No Audio Issue - Partial static video

So on the control board, the IC gets rather hot quickly. It's not burning hot but it's much hotter than I would expect - especially since it is not driving any images currently. None the less, the should just be toggling DIO anyways as it shouldn't be driven anything directly.

So I'm assuming the control board is also bad, but is there any other components down stream of the control board that could have been affected as well?

It looks like the YSUS, YBuffs, ZSUS, and ZBuffs are all ok, the power...

Re: LG 50PA5500 No Audio Issue - Partial static video

i'll take pictures tonight and upload them

Back story:

I have a LG TV initially had no video but had clear audio. Did some trouble shooting and narrowed the issue down to a bad YSUS board and bad upper YBuff Top.

Further Isolated the top most IC as having a short between input voltage and a few of the "header lines".

Replaced all three boards: YSUS and Upper/Lower Ybuffers.

Upon Turning the TV back on, the screen flashes and now there is only a snow like image on the bottom bar. All other bars are black.

Continued Trouble Shooting:
Removed the...

Re: New Members - please post your introductions here

... And now I wish I had proof read my message, unfortunately I see no edit button

Re: New Members - please post your introductions here

Hello All,

I'm new to this forum but from what I can tell it looks to very knowledgeable.

Quick Bio about myself, I am a former Air Force bet turned electricalengineer now turned software engineer. I reside in South Carolina and from time to time I pick up broken electronics with the hope of fixing them.