This sounds like a problem with the relay circuit that controls the power. In which case, it would not be a user serviceable part. It would most likely need to be dealt with by a Samsung technician. If the TV was purchased in the UK, you would have a 1 year warranty with the product. I can't say how long warranty periods would be abroad. For the US, call: 800-726-7864 For the UK, call: 0330 7267864
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