My samsung LNR408D lcd tv turns itself on and off multiple times when it is first powered up, and seems to stop when used for more than 30 mins. It has done this since 3 months after purchase, it went in for repair and the PSU was replaced. After a few months it did it again, and this time the PSU and PCB were replaced. Now 8 months later it is doing it again, and is out of warranty. Can anyone help please?!!!
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