well turns out it wasnt my tm800 at all, this time my tm800 was in standby again and noticed it had turned off again, then as i was watching it it turned on again then off again, then at the time i was watching a film on my xtreamer and that went off, so went to go have a little look and saw the light on my extension lead like blinking, and my tm800 and xtreamer power lights were doing same thing like coming on and going off, so went and bought a new extension lead today and its been fine, my old extension i plugged into the wall and had a little mess and it can be fine in certain positions, but when it moves into a nother position it can go off, so dodgey wiring or sumthing, anyway all seems to be sorted now, but it has been definately getting alot hotter than usual, like i mean really really hot, but looks like thats goning to be sorted soon , thanks for advice guys