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Ok hi from Finland. I'm repairing and modding a Xbox og 1.6 with this samsung psu. The 3.3v and 5v stand-by voltages come and go, i think there is something to do with heat because it worked for a while when i resoldered almost every single solderjoint on the board. I have replaced the 2 big caps and that did fix the original issue of completely dead. I have replaced all the bigger caps on the mobo. Mobo works just fine when the psu gives the power needed. Can someone point me in the right direction? I have been stuck with this for over a month and i'm doing this free for my friend. EDIT: Just tried to measure the psu once again and had no 5v. Then i plugged mobo connector back in and plugged ac plug back on and the f*cking thing works again.