LG 60 Plasma 60PA6550 white'ish screen & shut down

[mjaklrsav]

My LG 60PA6550 UF model will power up and then show a white'ish screen and then shut down after 1-4 seconds.
Once in a while it will stay on and I can make out the backgroud of the screen. See pics.

I replaced the main logic control board but issue still there.

Some mentioned the C802 cap which shows indentation in center. No sure if this is normal. see pics.

All other caps appear fine and not bulging.

I was thinking on replacing the C802 cap and then replacing the Main board.

But before I do this, I was hoping somebody had the exact symptoms and corrective action.

It appears that the white'ish screen can be cause by a few different components/boards.
Thanks.

[Andrew F. Ali]

Re: LG 60 Plasma 60PA6550 white'ish screen & shut down

I think.....this might be a Z-SUS problem....I am open to correction from the more experienced...

[R_J]

Re: LG 60 Plasma 60PA6550 white'ish screen & shut down

I too would suspect the Z-sus, Thats just the way that capacitor is manufactured, most likely made of two components then encased in its coating. Its not that common for that type of cap to be bad, but it does happen

[sukaht]

Re: LG 60 Plasma 60PA6550 white'ish screen & shut down

Sorry i can't start a new thread as new member.
I purchased a broken plasma TV LG 60PS60, it has a 2 inches vertical line.

When i opened the TV, i found a flex ribbon wire on the bottom of the TV under the vertical line WAS DISCONNECTED (I think this TV has been brought to the repair place and they disconnected this line)
See Image #1, #2, #3 when the flex wire is DISCONNECTED from buffer board. The 2 inches vertical line is not solid black (it has little green, white, black dots)

When I tried to connect this ribbon wire to the buffer board, i got the whole section in the middle of the TV (about 2 feed wide) became solid black.
See image #4 when i connected the flex wire (showing the whole middle part of the screen became solid black, seems to me the whole bottom middle buffer board to shut down).

Do I need to replace the bottom middle buffer board, T-CON board, or i have a bad Panel ?

Thank you for your help.

[cliff_hootarski]

Re: LG 60 Plasma 60PA6550 white'ish screen & shut down

1% bad board, 99% bad panel.

[Andrew F. Ali]

Re: LG 60 Plasma 60PA6550 white'ish screen & shut down

I agree that you might have a bad panel.

[mjaklrsav]

Re: LG 60 Plasma 60PA6550 white'ish screen & shut down

I have a question regarding two boards. 1. Main Logic Control Board and 2. Main Board

1. Main logic Ctrl board has green LED which blinks 4 times. 2 short blinks + 1 long blink + one short. What is this diagnostic code?

2. Main Board includes one solid "ON" Red LED. Is this normal?

[hmendez86]

Re: LG 60 Plasma 60PA6550 white'ish screen & shut down

That's normal with that steady red light and the green too is normal....the problem I think is the y-sus or the buffers on the y-sus...

[mjaklrsav]

Re: LG 60 Plasma 60PA6550 white'ish screen & shut down

Going to try a new Z-SUS board then Y-SUS. Ordered Z board today. Will post results.

[mjaklrsav]

Re: LG 60 Plasma 60PA6550 white'ish screen & shut down

Well, its not the Z-SUS board either. Next Y-SUS board. I'll see if I can get it cheaper on ebay.

[mjaklrsav]

Re: LG 60 Plasma 60PA6550 white'ish screen & shut down

Well,...Finally got to replace the Y-SUS board and,.....it fixed the issue. Now I will be selling back the main and Z-SUS board on ebay.