Re: LG 50PG20- No Picture. just humming noise

please help

Im very new to electrial type work but Im quick at learning and want to fix this myself.

I was watching TV today and a "pop" noise happend and the screen went black.

I did some research and tore the TV apart. A visual inspection of the boards looked good.

I decided to take the wire harness off of the Y-SUS board and then plug the TV in and turn it on. The humming noise was not present. I plugged the harness tothe Y board back in and then turned the TV on again and the humming was there.

I got a multimeter and there were 5V...