820-00045 Cycling

[bjf]

This board is cycling. PPVCC_S0_CPU cycling every 2 seconds or so. PPBUS is stable at 8.7V. USB-C is at 20V. It isn't a spill. I can't find any shorts. PPVCC_S0_CPU is at 80 Ohms to ground. Any thoughts on where to go next with this?

 

[2informaticos]

It will end on the bin I suppose, like all these boards.
Be sure all secondary voltages try to appear.

Try SMC bypass, to discard a sensor issue.

 

[bjf]

Ahhh, I was hoping this might be the one that got fixed. Silly. All voltages are coming up. So is this just a variation on the CPU being dead?

 

[2informaticos]

I think is better do NOT accept these boards at all.
We can waste lot of time to start one, and finally ends with failing SSD, or CPU in warranty.

 

[bjf]

Yes, for sure. This one is for a friend of mine who is desperately trying to recover his data so I was hoping to get it going for him. But in general, like many of the new ones, these seem like a waste of time.