Hi,

now I understand why one of my boards begins hashing but fails with a short on 12V after 30 minutes:



I will replace them. I hope I find one in one of my boxes. It will hard to replace them with the the backplate heatsink which is melted by thermal activated bonding foil... I will use my pre heater with low temperature (100 °C) and leaded solder.

Demounting was easy (twist left-right some times). After demontage the chilly works again and has not further an short circuit on the 12V rail any more. So I hope I get it back this evening ;-)

Cheers...