Lg 50pq30

[pposey]

Hi. Let me just start with what boards i have replaced. I have replaced the y-sus, z-sus, control board and lower buffer board.

I have sound but no picture unless i remove the bottom buffer board completely. Then on the top half of the tv i have picture but has vertical black lines across it but still see the static screen in the back. So thats when i bought the new buffer board but when i put the new one in there still wasnt a picture but has sound. I have no clue what it could be. Im thinking something on the bottom part of the y-sus where it plugs it but i may be completely wrong. Thank you for your help!

[freakaftr8]

Re: Lg 50pq30

Your upper buffer board may in fact be toast. The lower will not display a proper picture without the upper installed as the data has to go thru the upper to get to the lower.

[pposey]

Re: Lg 50pq30

wow. so i bought the wrong buffer, that sucks. Thanks for the quick reply. I guess ill buy the upper. If that doesnt work i guess ill part it out. Thanks again for your help.

[freakaftr8]

Re: Lg 50pq30

Scratch that. Your lower is bad I meant. Did you buy the lower new or used off eBay that was stated as tested?

[pposey]

Re: Lg 50pq30

Bought it out of a new tv that the screen was damaged during shipping.

[pposey]

Re: Lg 50pq30

Bought it out of a new tv that the screen was damaged during shipping.

You think it is the y-board again or is it something else? Anything i can test?

[Glitcher]

Re: Lg 50pq30

You can test for shorts on the buffer board similar to the Samsung buffers. If you bought it from a panel with the cracked screen chances are the buffer may be bad. Buffers usually go bad once screen is cracked and power goes through it.

[pposey]

Re: Lg 50pq30

You can test for shorts on the buffer board similar to the Samsung buffers. If you bought it from a panel with the cracked screen chances are the buffer may be bad. Buffers usually go bad once screen is cracked and power goes through it.

Thanks for the quick reply. I tested for shorts on both the original buffer board and the one i bought. Niether one of them had shorts. Does that count them out as being bad or can they still be bad?

[pposey]

Re: Lg 50pq30

Anybody else have a idea on whats going on or had the same problem? i really dont want to part this out if i dont have too.