My old plasma died when one night recently. When I got to it it was giving a 3.3v sos (3 blinks).
I chased my way through the PSU, and a board, with no results.
Replacing a few bulged caps in the PSU, I eventually got to the SC board that had piles of shorts, a quick cheap replacement from china and the tv powers up again, except
I only have the right half of the picture.
Left half is completely blank.
now the c3 board running this side of the screen has its 3.3 and 5v onto the buffer ic and its got the 60v, so that all seems good.
all the other voltage rails check out (180v, 15v).
So I am a bit of a loss on where to go with this, the c3 and A board are both a bit difficult to get hold of, not really sure I want to put more money into this, but I am driven to repair it beyond reasonable expectations :p
I was wondering if I go unplugging the ribbon cables from the C3 to the display to see if the display is shorted? Not sure if there are any downstream electronics after the C3? Seems different models have had issues with these cables so maybe worth a try reseating them?
Is it reasonable to think if the buffer IC failed it would take out the complete side of the screen?
Have I got a flakey chinese faulty SC board? I cant see it would cause a left/right issue though?
I am also questioning if the A board could fail like this? I have gone through it looking for any silly mistakes that I cant rule out.
anyway, thanks for taking the time to read
I chased my way through the PSU, and a board, with no results.
Replacing a few bulged caps in the PSU, I eventually got to the SC board that had piles of shorts, a quick cheap replacement from china and the tv powers up again, except
I only have the right half of the picture.
Left half is completely blank.
now the c3 board running this side of the screen has its 3.3 and 5v onto the buffer ic and its got the 60v, so that all seems good.
all the other voltage rails check out (180v, 15v).
So I am a bit of a loss on where to go with this, the c3 and A board are both a bit difficult to get hold of, not really sure I want to put more money into this, but I am driven to repair it beyond reasonable expectations :p
I was wondering if I go unplugging the ribbon cables from the C3 to the display to see if the display is shorted? Not sure if there are any downstream electronics after the C3? Seems different models have had issues with these cables so maybe worth a try reseating them?
Is it reasonable to think if the buffer IC failed it would take out the complete side of the screen?
Have I got a flakey chinese faulty SC board? I cant see it would cause a left/right issue though?
I am also questioning if the A board could fail like this? I have gone through it looking for any silly mistakes that I cant rule out.
anyway, thanks for taking the time to read
