I have a goodmans NSF model and it works perfectly, great picture all buttons are fine. After 3-5 mins it switches off, if you turn it on and off at the mains it will switch stright on again and last the same amount of time, if you try to switch it on and off using the tv's buttons it won't work. I'm up for spending to up £60 to get it foxed, Any idea's? Many Thanks Rachael
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