If it's very thin and small circumference it goes between the antenna and swivel. There may be 2 of them.

Hey Robby,

I’m sorry to hear the fan isn’t working when plugged into the Xbox one psu! A voltage reading of .3v would indicate a shorted or dead component somewhere before the fan input. If I were in your shoes I’d follow the traces from the fan plug and test every component possible in diode mode along the way. Unfortunately this may require full disassembly by removing the metal shielding on the bottom of the supply which I failed to add to this guide. If you have a microscope or hand magnifier check to make sure no connections are bridged. If you preformed any solder work double check everything you did. I’m sorry I don’t have a definitive answer but I really hope you get it figured out!

Thanks for the awesome comment! I'm glad my guide helped you get your PSU clean and back in the game

Is it a T10 or T10 security bit? Security bit has a hole in the middle

I'm here to serve :) glad you got it

If plugging in the system trips the power supply, there's no white/orange light, this could be a sign of damage on the motherboard itself and not the psu. I had a similar issue, with a known working psu, and connecting to my system would trip my supply too. Mine had a short to ground, believed to be on the main chip itself, which is why it kills the supply. Ultimately I had to buy a replacement paired motherboard/bluray pcb on ebay.

My first suggestion would be to test the mosfets on your power rail.

https://youtu.be/HEceb1Qxyec

Power problems with the xbox one often stem from mosfet issues. It could be something else however.

This link may help your situation

https://youtu.be/HEceb1Qxyec

It's hard to say without poking around with a multimeter. Possibly one or several capacitors died. The benefit is you know it's localized to the psu so take it apart and take a look around. If you see anything noticeably damaged then you can pinpoint it

I hate to say it but it probably can't be reattached. Your best bet would likely be to apply some kaptom tape on the ribbon cable and connector which will hopefully hold the ribbon cable in place.

That's a bold claim seeing as 28 others have marked that they have successfully followed these steps. 75k have viewed this page and while some can't get it to work, none have made the claim this is fake. If it was I'm quite sure ifixit would remove my post.