Hi, I have a 32-inch sansung TV, it doesn't turn on and it doesn't turn on the red LED either. I disassembled it and measured the source plate and at the output of the connector does not deliver any voltage on the pins. Visually you don't see anything jumped, the capacitors don't look swollen, check the diodes, fuses and I don't find anything weird. the voltage goes well to the diode bridge 220 and 330 leave through the capacitors, then enters the traffic, and at the output on two pins I have 3.5v in the others nothing. The Source Plate is BN44-00493A

Hello, I wanted to tell you that I already discovered the fault, it was one of the SCHOTTKY SB 3150 diodes, on the plate it appears as DM858. It is a 3 to 150 V diode. It was complicated to get the replacement and with that same feature. replace it with one of 200v. It is working ok. Cheers