60" LG Plasma 60PA5500 (Sound but no Image)

[living to camp]

Re: 60" LG Plasma 60PA5500 (Sound but no Image)

Sorry picture didn't attach for some reason

[Biruslapio]

Re: 60" LG Plasma 60PA5500 (Sound but no Image)

Bad buffer boards, remove the upper buffer from the TV and test with bottom only and you should get a correct picture on the lower half and correct Z-BIAS, if not buffer or Z-SUS may be damaged.

[living to camp]

Re: 60" LG Plasma 60PA5500 (Sound but no Image)

Ok, removed the upper buffer and had the same fuzzy picture on the bottom. Also removed the lower buffer and put in the top buffer; also had fuzzy picture.
ZBias was the same voltage no matter which buffer was in

[Biruslapio]

Re: 60" LG Plasma 60PA5500 (Sound but no Image)

remove both buffers and test vsc, -vy and zbias, if only zbias is wrong then z-sus needs repair.

[ReeceyBurger123]

Re: 60" LG Plasma 60PA5500 (Sound but no Image)

Zsus, buffers and Ysus possibly shorted somewhere. All boards need testing due to chained ERC circuit.

[living to camp]

Re: 60" LG Plasma 60PA5500 (Sound but no Image)

Thanks guys, I'll do some checking and will keep you all posted.

[living to camp]

Re: 60" LG Plasma 60PA5500 (Sound but no Image)

Just an update; the guy who sold me the buffers sent me another set and they are shorted also; he said he will send another set but I asked him to check them before sending. Seems like I cannot win with this.

But I have a question.... if I leave the orange ribbon where the short is on the buffer board disconnected, would I get a normal picture? Obviously I would have a black line across the screen.

I'm just curious if this tv would work so I would know if there is more wrong.