LG 50PT350 help

[sleeper123]

I picked up a LG 50" plasma to work on. When I got it home to see what it was doing it had a burnt 102k 1kv capacitor on the Y-sus board. I replaced it and it's still not running but the Y-sus board has a buzzing noise. Here is a picture of the capacitor I replaced.

[sleeper123]

Re: LG 50PT350 help

Nevermind. When I checked the power supply board I forgot to plug the main board back in. TV is up and running. 2nd TV repair is in the books.

[sleeper123]

Re: LG 50PT350 help

Here it is up and running.

[sleeper123]

Re: LG 50PT350 help

Here is the bad capacitor that I replaced.

[nautical naturist]

Re: LG 50PT350 help

As the maintenance manager for a restaurant chain on occasion I am called on to repair a TV. The latest has stumped me.
I have an LG50pt350 with no pic or sound. The power button and remote will cause a relay on the main power board to click three times, then shut down. I replaced the Zsus board and gained sound and a bad picture. The picture is dark and hard to see, almost black and white, but not quite. I am wondering about the Ysus board and two Y drivers. Any opinions or suggestions?
Thanks,
NauticalNaturist.

[ReeceyBurger123]

Re: LG 50PT350 help

As the maintenance manager for a restaurant chain on occasion I am called on to repair a TV. The latest has stumped me.
I have an LG50pt350 with no pic or sound. The power button and remote will cause a relay on the main power board to click three times, then shut down. I replaced the Zsus board and gained sound and a bad picture. The picture is dark and hard to see, almost black and white, but not quite. I am wondering about the Ysus board and two Y drivers. Any opinions or suggestions?
Thanks,
NauticalNaturist.

Picture of the issue please ? Sounds to me like a failed mainboard.

[sleeper123]

Re: LG 50PT350 help

My symptoms weren't like that. As soon as the tv was plugged in that capacitor started to arc. From what I have read power cycling like you describe comes from a bad IC on the main board like Reecey stated.