820-2936-B Powers Off

[2informaticos]

Disconnect internal HDD and try to boot USB macOS.

CPU gets very hot?

Try new BIOS, clean ME...

 

[2informaticos]

Put correct, thin layer thermal paste.
And try another heatsink; original can have broken heatpipe.

Still recommend clean ME region...

 

[sws]

Ok, I'll do the clean ME while I try to find a heatsink. General practice to use a Pomona 5250 on the U6100, desolder, or is there a hirose connector somewhere that I'm missing for this board?

 

[2informaticos]

Remove the chip and use A4064 board...

EasyFlash Loose bits and pieces