Samsung PN50C430 no picture-just clicks

[walterbeers]

First off I have 0 voltage at both the VS and VA test points, not even for an instant when plugged in. Remote or power buttons do nothing. I unplugged the Y sustain board, from the power supply plugged the set in, still nothing, no voltages (not even for a moment), just clicks. I removed the power connector from the power supply that goes to the main board, no clicks, no voltage, nothing. I have yet to try connecting the Y sustain board to the power supply with the buffer board disconnected, There are no bulging capacitors anywhere that I can see. I do have voltage though on the hot side (AC line cord side) of the power supply, at the 2 big capacitors at the top left of the board. The voltage there jumps up and down as it clicks bouncing around 450 volts DC. I will look over the power supply board closer for bad connections, but I do have a replacement coming. I will try the Y sustain hooked up to the power supply with the buffer board disconnected. I doubt it will change anything but will give it a try. Right now I feel I have a 50/50 chance of the power supply board being bad. Time will tell.