This console was working fine until suddenly it would start for 2 seconds and shut off again. i checked the fuses and fuse f3501(12v rail) was blown. there was no short on either side of the fuse and no where else and no visibly damaged component so i replaced that fuse. now the console is pulsing blue. standby and poweron voltages are all present except that the 12v rail reads ~11,4v when the console is turned on. Is there any easy way to identify the faulty component other then replacing every component one by one on the 12v rail?
PS5 not really my thing, so hopefully someone else will chime in but you might be able to help them out by measuring the resistance to ground on the 12V rail and providing the reading, while it might not be a dead short, you might be in a situation where you have a soft short - which i think you do given the fuse blew (it wouldn’t blow for no reason). If it is a soft short, then your not going to have much luck finding it with a bench supply and detection with heat, so you might wanna play the o’l hot cold game with your meter in resistance (provided it has the resolution) to narrow down the culprit, just to save you pulling things off one by one.
For more details about this, check this thread for a similar situation on a Switch, same principle
Other thing to watch out for is, you could have a short on a sub rail, so it’s worth checking any sub rails too prior, as a short downstream could pull your 12V rail low as a result.