I have a Samsung TV LN46A650A1F, it Kept on/off many, many times, then, it went on. Now, I changed 7 capacitors in the power board, the TV keeps clicking as soon as I plug it into the power. The strange thing is the TV flash light is on but I can't detect the stand by voltage 5.1. After I unplug the TV from the power, I use a multiple meter to check the rectifier diode and discover there is a short circuit by pass the diode. Any idea to fix it would be greatly appreciated.