Possibly faulty PS3 - strange fault, help required please

Now this is weird... PS3 'Phat' 40Gb, when power to unit, red light is on. When i press power button, light goes green, fan starts, then stops, then.

var:http://www.avforums.com/forums/ps3-hardware/1460083-possibly-faulty-ps3-strange-fault-help-required-please.html