widesceen television?

GOODMANS
ld3265d1
This set switches it self off arter 7 - 9 minuts, the power blue light goes off as well. if you switch the set off and back on the blue light flashed. but if I heat the power board up with a hair dryer it come on using the remote, for the rest of the day untill it is switched to standby, so I go through the prossess again to get it to stay on, should I change most of the caps around the input switching! on the power board