Nintendo switch no turn on

Hello, I have a switch that does not want to turn on.
If I remove the nand it goes into RCM mode, the same if I put another one from another computer and turn it on with it connected it goes into rcm mode.
When trying to inject hekate, it doesn’t do anything, you don’t see an image or turn on the backlight.
The voltages are present on the max77620.
What I don’t see is the 0v8 cpu voltage which never shows up.
Replaced max77621 and fuel gauge and still no avail.

Let me see if you can give me a hand.

All the best. Thank you