Did you ever figure out what the issue was? Mine is doing the EXACT same thing. Powers up with the light on, fan spins up then off and shortly after that the console shuts off. I bought a replacement power supply but dunno if that is the issue, haven't taken it apart yet. Cheers

Mine just had an issue where it turns on, button lights up white along with a beep, fan spins up for about 5 seconds then stops,
Light stays on but no video feed then shuts off.

Dunno is this is a PSU issue?
I ordered one to be safe, if it still doesn't fix it I will just send it back but if this isn't the issue then what is?
The SSD?