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Old 10-03-2021, 01:12 PM   #4
neilc6
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Join Date: Nov 2015
City & State: BC
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Default Re: Flashing Baclight UN60Fh6003 - PFC off

The backlight driver circuitry is fairly burnt up which is an indicator of bad backlights. You should get standby voltage to the main from the power supply. The power supply turns on with a PS-ON signal from the main. Samsungs have pull up resistors on the both PS-ON and BL-ON signals so disconnecting the main will force the power supply and backlights on.

I have little luck repairing LED driver circuits on Samsungs unless its just a shorted diode and typically replace the whole board. You can test the diodes, FET and sense resistor for shorts.

Last edited by neilc6; 10-03-2021 at 01:16 PM..
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