820-02098 20V then drops and loops

[No-Clean]

Clean board, makes it to 20V but not 5 seconds later goes back to 5V then repeats.

Checked for shorts everywhere and found nothing, checked with thermal camera but there is nothing obvius.

PPBUS makes it to 12.2V then drops.

 

[2informaticos]

Possibly NAND problems.

Is it recognized into DFU?

 

[No-Clean]

Well after putting board back in case for DFU restore it booted up fine, I told the customer to make a backup just in case.