Spell checked unlike some posts.
I am a moderator on the forum but due to illness I'm not as able to come on as often. Anyway, I have an LG 42PS3000 in. As usual no picture, Vs and Va ok, found a s\c cap and o\c resistor on y-sus. These feed and decouple voltages for the buffers. Now I have perfect lower picture but the top is modulated but grossly overbright. Can the y-sus board be the cause, I would have thought that as the lower part is perfect the y-sus is likely to be ok. I'm going for the buffer pcb. Who is with me on this one, is any old fellow techies I used to converse with on here still around. Ta anyone?
Ta Bruce, I've seen a lot of your posts. I used to be on the site a lot. In the days when LCD\PLASMA was in it's infancy. Thanks for your comment re. spelling. It used to hack me off when people can't even get the model number right. I've got dementia now but I still try, I play Scrabble a lot on-line and love playing you lot over there.
Cheers re. the tv, it belongs to one of the people at my care home, I'll go for the buffer, thanks Bruce.
Truly wonderful, but sad Tony now has issues - Chris.
Hello Chris, stranger, are you alright? I'm batting on. Thanks for your comment, just this damn set. I don't take much on now. This set belongs to one of the care workers. Does it sound like the buffer to you? Never had one where the y-sus board is faulty yet the set is perfect in the bottom half. The top half of the picture is there but grossly over bright and there is a definite separation between the two.
Couldn't find anything wrong on the buffer, there were no lines missing, just excessive brightness in the top section of the picture. Thought I'd through a buffer at it, I'd repaired the ysus, picture restored. Cheers all of you.