When I connect the power cord to the outlet my 32" LCD TV Samsung model code LN32B550K1MXZD shows NO Video and NO Sound, the STAND-BY RED LED keeps blinking forever and the CCFL backlight lamps DO NOT TURNS ON.
I have tried to fix the PSU(power supply and inverter board), but I could not find any problems. There are no bad capacitors bulged or linked. The bridge rectifier and filter capacitor voltages are OK. The 30-pins connector voltages are the same specified on the Sansung Service Manual. This connector is linked to the MAIN BOARD by a 30 wires cable.
When I disconnect the PSU from the MAIN BOARD,the CCFL lamps turns on. When I connect ONLY THE MAIN BOARD (without T-CON) to the PSU, the lamps DO NOT TURNS ON). I suspect the culprit is the MAIN BOARD. Any guess on helping me to fix the MAIN BOARD or saving me some time and money confirming if I really should replace IT ? Attached is the TV Samsung Service Manual.
Attached is the SMPS schematic diagram. I have the Service Manual but it is too big for upload in this post.
Topic: LCD TV Samsung 32" NO Video NO Sound STAND-BY RED LED blinking (Read 2664 times)