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Samsung ue55h6200 sound but no display

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Nix125:
Good afternoon all hope someone can help,

One evening a week ago Our samsung TV screen suddenly went blank but audio was still working. Left for a while then turn off/on power to see it this resolved the issue but issue still persists. Input is not the issue as menu screen is not visible  either. Did the flashlight test which failed also. Audio still works but no led back light or video display.

Please see attachment for picture of the tcon, power board and main board. Before I start randomly changing boards, ect. When powering up the front red LED flashes around 7 times. Can anyone advise on how and what to test next?

Kind regards

fix2003:
One of the common failures is of the LED strips inside the TV which provide the back light.

do a general search Samsung led backlight will be some utube stuff should point you the right way

Nix125:
I've looked into that and can use 4 x 9 volt batteries  to test the 12 bulb led strips but it failed the flashlight test so wondering if it's a psu fault?

fix2003:
could be psu is there a number on the pcb ?
if the voltages are marked would be easy to test

Nix125:
Hi fix2003 thanks for the reply. Theres an attachment on the post for the pcb.

https://quuq.org/forum/index.php?action=dlattach;topic=10685.0;attach=5226

Doesn't look very well labelled. You can see the set of leads that go to the main board and the other to the leds. I'm hoping it's the pcb as they are pretty cheap to buy. Any advise on testing? Have you had encountered this issue where you have sound but no led back lights and fails the flashlight test?

King regards

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