Wont turn on, but still makes the beep

Xbox 360 slim, trinity motherboard, Coolrunner rev c, no idea what type of rgh it is (1.2 or 2). I do have cpu keys and nand backups, no nand read/writer though.

It's been working for a while and I was surprised to figure out it was rghed after I tried running bad update. Anyways, I wanted so surprise him by cleaning the shell out and everything to make it look brand new. I was in the middle of taking off the 2 side panels. (The really hard ones on each side) I got a little frustrated that the clamps weren't being undone and I went a little crazy opening it. I thought to test it just in case and then my heart sunk. It wouldn't boot.

I've tried so many freaking different things. I tore it all the way down and tested without the rf module, used a different psu, even desoldered the glitch chip to see it that was it. Still nothing. It's doing something really weird when I power it. It makes the chime and the fan moves a little bit, then it powers straight off. I've torn it down to bare bones and still the same thing. Any ideas? I just feel super bad :(

I have have about 15 different photos on the motherboard and 2 videos. 1 video is really bad because it was like 12 in the morning.

Images: https://imgur.com/a/a7Ndpe6

Update (09/01/25)

I've torn is all the way down to just the motherboard, still the same :(

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crwdns2944067:03crwdne2944067:0:

Hi!

The issue is most likely something on the motherboard.

Did you also checked the MOSFET?

In the worst case, you do need a motherboard replacement and see how that goes.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

How would I check a Mosfet?

I've made attempts but all the numbers don't really make sense to me.

crwdns2934271:0crwdnd2934271:0crwdne2934271:0

Hi! You can check this one out: https://www.youtube.com/watch?v=DAYPlfUD...

Please let me know if any more info is needed!

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