Hi again! I've had great success with repairing several LCD monitors and TVs with the help of the friendly members here.
I recently rescued a Samsung UN55F6350AFXZA from the curb.
I powered it up and let it run for about an hour. It seemed to work fine other than half of the backlights not functioning, and a dark splotch near the upper left corner of the screen.
I disassembled it and found some scorched components on one of the backlight strips. There are also components on other strips that appear to have been overheated, with discoloration showing through the mounting tape.
The dark splotch seems to have been caused by the missing section of the reflector and soot on the diffuser. I shined a powerful flashlight through the screen while displaying an image and it appears undamaged.
Oddly, all but two of the LEDs on the scorched strip are still functioning. The third LED from the scorched area gets very hot, and I can smell the small lens melting.
Will a full set of new replacement backlight strips remedy the issue?
Is there possibly a separate root cause further back in the circuit that needs to be addressed first?
Thanks for any help you can offer!
I recently rescued a Samsung UN55F6350AFXZA from the curb.
I powered it up and let it run for about an hour. It seemed to work fine other than half of the backlights not functioning, and a dark splotch near the upper left corner of the screen.
I disassembled it and found some scorched components on one of the backlight strips. There are also components on other strips that appear to have been overheated, with discoloration showing through the mounting tape.
The dark splotch seems to have been caused by the missing section of the reflector and soot on the diffuser. I shined a powerful flashlight through the screen while displaying an image and it appears undamaged.
Oddly, all but two of the LEDs on the scorched strip are still functioning. The third LED from the scorched area gets very hot, and I can smell the small lens melting.
Will a full set of new replacement backlight strips remedy the issue?
Is there possibly a separate root cause further back in the circuit that needs to be addressed first?
Thanks for any help you can offer!
Comment