Samsung LE32R7 Picture come on then goes straigt off

SOURCE: Samsung LE40R51B no picture but turns on

i have the same problem i was told by a repairman that samsungs are known for bad psu. and that its expensive to repair

SOURCE: no picture on samsung lcd tv

I have the same problem. I brought a Samsung 46" in July 07 and on Jan 8, 2008, video went blue.

I called Samsung and sent out technician and they replaced the motherboard.

Two hours later, same problem occured. I called today and Electronic Company thinks I have a bad LCD panel.

SOURCE: samsung tv turning off by itself

I have the same problem of the set turning off and on by itself. There is a circuit in Samsung TVs that would shut it down if a very loud noise occurs in the program being watched, but I have not noticed that correlation. My problem is solved by vacuuming the back panels of the set. They do not seem to have any significant dust on them, but I think the vacuum sucks somewhat inside of the TV and does some good with the fan that is supposed to be cooling the bulb and the mirror. It seems to work for months on end and when the problem recurrs, I vacuum again.

SOURCE: how hard it is to replace by yourself main board Samsung LN-T4065

You need to do some more diagnosing of the problem. If you get sound and change channels take a bright flashlight and place it again the screen. Look for an image around the edge of the flashlight.
If you see an image that means the LCD controller board (TCON) is probably good.

The problem is probably one of three causes;
1) Inverter board is bad
2) CCFT (cold cathode fluorescent light) are bad.
3) Power to the inverter board is bad. You can also check the connectors.

SOURCE: Samsung PS50C91HDX Sound but no picture

It sounds like the main board or screen may have gone

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