Samsung un55js700d no picture

[whogan1369]

I have this Samsung UN55JD700D 4k tv that has sound but no picture. I bought a new tcon board from shop jimmy that didn't fix it. When I unplug the right side (when looking at back of tv) ribbon cable on the tcon I get a great picture on just the right side of the screen. The left side will just stay black. If I unplug the left side and leave the right side in I get nothing. All the backlights are working, and I don't see any swollen caps. Any help is appreciated.

[bman4]

Re: Samsung un55js700d no picture

might be something shorted on that driver board

[mmartell]

Re: Samsung un55js700d no picture

...if you're lucky...

[whogan1369]

Re: Samsung un55js700d no picture

I'm gonna open it back up today and poke around. I may buy a used board to throw in it and see if it helps.

[dskall]

Re: Samsung un55js700d no picture

Need to check for shorts on panel pcb boards. Maybe bad ceramic capacitor

[attainteddragon]

Re: Samsung un55js700d no picture

I'm gonna open it back up today and poke around. I may buy a used board to throw in it and see if it helps.

i would not go buying more boards for this set. you are going to be looking at a panel fault, if you are lucky, you may have a bad cap on a driver board. it will be on the half that you can't get a pic from. left and right side will most likely be mirrored, so you can get some comparative readings.

[jjanssen7]

Re: Samsung un55js700d no picture

Are shorted ceramics on the driver boards common? Anybody here actually find one? I've looked a bunch of times and never found one but sounds like there may be something I'm missing.

[attainteddragon]

Re: Samsung un55js700d no picture

it is more often that it be cof failure, but we are always hopeful that it is something repairable, though not often the case.

[jjanssen7]

Re: Samsung un55js700d no picture

I found one once, but it was like looking for sharks teeth on a beach. I wondered how rare the shorted ceramic capacitor on the driver board was. I guess it's one more thing to look for, but if I understand things right, cof's fail more often.

[dskall]

Re: Samsung un55js700d no picture

They are small boards and only take couple of minutes to check