Then you get the service manual and check the voltages. Many models are at www.samsungparts.com and run about 12 dollars. Basic electronic tech skills required.
I have a Samsung TV set. When it's turned on, the lights are on, but no picture and no sound. I asked abctay. They told me it might be a power board fault. You can buy a power board and try to replace it. Is that possible?

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