When I try to power on my 32" LCD TV Samsung model code LN32B550K1MXZD it has no VIDEO and no SOUND, the STAND-BY RED LED blinks without stopping and the CCFL backlight lamps do NO TURNS ON.
I tried to fix the PSU unit (power supply and inverter board), but I could not find any problems. There are no bad capacitors exploded or linked. The bridge retifier 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 guesses to help me and save me some time and money tor not buying the wrong board ?