Sounds like power issues. Did you try a new HOLD PLEASE.
Before I continue all advice is given as you understand the lethal issue of working on almost all gear today. That and you accept this as-is and without warranty or liability by anyone.
OK, I'd try a new power supply board.
I have a samsung LCD TV, model LNT4071FX/XAA. When I turn it on, a creeping gray screen comes across the TV. The sound is still good. Upon turning it off then on after letting the screen go completely grey, it clicks on and off a half dozen times, then the picture comes on and will run all ight with no problems. I replaced the power board thinking that could be the problem but it didn't fix it. Does anyone have an idea of what I could try next. I appreciate any help. Thank you

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