So I have an Xbox one X that died, it just won't turn on, I asked Red Fusion and there respond was, could either be the mother board or power supply was the issue. Is this fixable?

It could be the Motherboard, Power Supply or the Re-timer IC. In rare cases if the Re-Timer IC has blown the console won’t power on at all. I have not been able to fix Power Issues were it does not relate to that or just changing out the Power Supply. Xbox One X doesn’t have a power rail layout like the Base Model or Xbox One S. On those models, usually the Mosfets go up and they just need replacing to get it up and working again. Xbox One X is a totally different beast.

I had a ridiculously complicated fix needed for my PS4 and they fixed it and took such great care of it. 100% take it to them to be fixed. The 6--8 week wait time is worth jt

It would be better to take it in and have them check it out then have to hunt down a new console. At this rate it'll be hard to find a gen one Gameboy with how people are buying up everything in site.

Idk myself. But I say take it in and talk to them.