Facing TV Problems? Ask a TV Technician.
Hello. My name is Michael. I can help you with your question today.
I would need a link to the question. If you have that and can provide it to me, I can take a look at it, yes.
No. I need URL to the question.
Based on that, it sounds like the main board. BUT, it could also be a Y Buffer failure, which can cause YSus failure, which can damage the main board. So it may be something that started with the Y Buffer - when you changed the main board, did the symptoms change at all? Was the replacement main board new?
There's always a chance that a used part is not working... it happens frequently.
Have you tested the voltages with each of the sustain boards detached?
As you would have been instructed to do before.. test all of the power supply outputs (5, 15 vdc, Vs and Va) when powering up. They should each ramp up when you power up. If all of them are not, then it is probably still the main board.
If they ramp up but don't stay there, you should also do the same thing with each of the sustain boards disconnected.
This is something that you should have done even prior to replacing the main board. Did you carry out these steps before replacing the main board?
Ok. It will be - once you find out what board.
I would appreciate a moment of you time to rate my level of service at your convenience. It will not affect our ability to communicate.