I have a 2022 RZ09-0427EE23
It went to sleep overnight, and would not turn on in the morning. I have tried the power adapter cycle outlined in https://mysupport.razer.com/app/answers/detail/a_id/1798
I have confirmed the power adapter is functional using a multimeter, and it is outputting 19.2V.
For at least the first 8 hours after discovering it, I was able to plug a device such as my phone into the left-side USB and charge off the laptop, indicating there was still some USB power going to that one plug. However, no devices were connected to the laptop when this problem occurred.
I have tried unplugging the actual battery pack and CMOS battery, as well as removing the m2 SSD from inside and reinstalling everything in an effort to power cycle the board.
Holding down the power button only shows a single white flash after ~10 seconds with no other activity.