MY SAMSUNG T.V. CLICKS AND WON'T SWITCH ON

I can't take credit for what I am about to suggest. Another user on this site already figured it out. The power board does not have to be replaced. The problem is faulty capacitors on the board. If you are handy, you can replace them in short order. The bad capacitors are the 1000micro-Farad, 10V capacitors. The tops of the capacitor should be flat, but a bad capacitor will have a slightly dome shaped top. It looks swollen at the top, but it's subtle. The user that originally posted the fix reported that some bad capacitors will also have a brown liquid oozing from the top. Anyway, I had the same problem and I replaced two capacitors this weekend for less than $4. It's worth a try if your unit is out of warranty because if you have a repair man come out, you will take a drumming.

you need a new power supply board. common problem with all samsungs.