I had the Device on inside the case which comes along with it. Heatsink on top and bottom in place and it was working fine. I was in Uboot. then after few mins no response from uart and no display also.
Now it will power on but no display on hdmi and nothing on UART. All it does is heat up under the CPU are if I keep it on for more than a min it will get super hot.
Just found out a new thing about this situation, When I connect uart from pc to device then the windows would crash blue screen of death. If I remove it I can use the PC without any issue. I am not really sure if its the device pulling to much power? AFAIK uart should power isnt connected to the board, just RX, TX and GND.
I tried M-Register to check If I can get it to upgrade mode but no luck.
I can confirm there is something short after I did this.
Just removed the heatsink to check how the CPU gets, I just connected the usb-c and within 2 seconds the cpu was super hot that I couldn’t touch it anymore. I think there is something short.