Originally Posted by lonleylad
if it is a slim then big chance it is your psu,,very common fault with them ,,
sony did not think it out much when they designed these ,,the fan pulls hot air from the chips and blows it out through the psu which also gets rather warm ,,due to the extra heat from the chips it overheats the psu and blows components in psu ,,get another one ,,it shuts down due to overload ,,if it is a aps 250 psu (check on bottom of the psu) you could be in luck as they have 2 adjustable pots in the psu that can be adjusted (plenty of tuts on net about it)),,this is another way that might solve your fault ,,when it goes out ,,do you have to pull the plug out and plug back in to get a red light,,i usually replace the pots with a better quality but you do need a m/meter to set the values ,,you can either go to high or to low and can cause damage
Thx for the info, i made the adjust of trimpots ( my psu is aps 270) but nothings change i've heard its could be ci cx099****, reballing/reflow could resolve, i tested every capacitor on the mobo, but nothings anormal, so i was thinking on mosfet : 025n03ms, its strange, the gate is on ground, source receives 12v and drain only have 1.0v, so the processor and rsx only works with 1~1.10v ???
thats the only thing i found strange.