turn on, restart, turn off and turn on. But when I disconnect the power and reconnect it, it no longer turns on. 
I have to wait a while and plug it back in and turn it on. 
When it does not turn on, it only provides power to USB ports.

This is the summary. 
The complete margin is that I normally work with servers and PCs. But my Xbox started to fail and I still haven't spent much time on consoles as soon as I'm starting. 

The original fault is that when restarting it turned off and no longer turned on. 
Due to lack of time, I took it to a workshop that they recommended to me where they changed the KSB. And it turned on normally, but days later it turned off again and no longer turned on, I had to leave it unplugged for several hours and reconnect and it turned on perfectly. 

I took it back and it was the plate, they changed the 2 slats altogether. "A new console" 
It lasted approximately 1 week after I disconnected it to move it from place to place, it no longer turned on. That is, back to the main fault. 

There have been 2 laps I've done for the warranty, trusting that they know what they're doing, but I'm already tired. I know they're talking to me about the license plate, but due to lack of time and since it was working for me, I didn't say anything, but I got the hang of it. 

Right now I'm like I was at the beginning so I want to get involved in time. 

Anyone with the same error? 
Or similar, give me advice, where do I start checking?

Thank you in advance.

Xbox series x in limbo help!!