Lg 50pb2dr tuner fault. No sound hdmi intermittent

[hikaru]

Hey guys got an old lg plasma that just stoped working suddenly
Tuner wont tune anything and showing no signal. Tested another tv same cable all good.
At the same time sound has become intermittent as well on both hdmi

Its pretty old so i don't want to waste to much time on it but just want to see if can be fixed easily before it goes to the junkyard in the sky

I was thinking main pcb. Or power
Excuse me if i sound dumb.
And yes i know not to poke around the power board because of the caps

[hinekadon]

dump

[loopyloo]

Definitely dump.
Plasmas are usually hard to fix.

[TVguy]

These models did suffer from failure of the 3300 ɥF capacitors in the PSU. That said, this is an ancient product and not worth anything.
In winter they make for a great heater.