Samsung ln46a540p2f lcd tv power problem

SOURCE: Samsung LCD TV shut off, wont turn back on...?

My samsung lcd is doing the same thing, and I have been told that the power supply is bad. But apparently samsung won'r sell you one.

SOURCE: Samsung LCD 40" While LInes, Clicking Noise, Red light blinks

Your LCD has gone bad or their is a high voltage problem that powers the LCD. Usually a inverter board.

SOURCE: 46 inch Samsung TV that just clicks but wont turn on

I just fixed this very same problem. It is the capacitors are the problem. However, I think that if you have some minimal skills with soldering, you can fix this yourself. You just need to take out the system board, then the power supply parts are on the top right. The bad capacitor(s) will be bulging at the top and possibly have some brown stuff coming out. The ones that go bad are 1000microfarad, 10V, however you can replace them with higher voltage. I got 35V caps from radio shack for 1.59 each. You just need to solder out the bad ones and then put the new ones in and solder. Remember that the negative end goes on the side with the bold black part of the circle on the system board. Then just cut off the extra ends of the capacitors. If you are capable of doing this yourself, you will spend at most 6 dollars instead of however much a technician costs.

SOURCE: Samsung 40inch LCD tv doesn't turn on for some

To all who are having power supply issues: Samsung is now acknowledging a problem with the faulty capacitors. I called 1 800 726-7864 and they said they would repair certain out-of-warranty TVs if the problem is related to the capacitors. I just called and they are sending a service rep out to diagnose the problem

SOURCE: clicking sounds and delay when turning on lcd tv LE52M86BD

Hi

A common fault with this model is bad capacitors in the power supply, Remove the back from your tv and look at the power supply for bulged / swollon capacitors on top, they may even leak a brown like substance and should have a value of around 1000uf 10v
Change these where possible with the same uf but higher voltage lets say 1000uf 25/35v
Hope this helps
Please rate my reply++++