No . The hash board of the device is broken and did not work with the pmu board anymore

ok dear
Do you know the association for miners' repair workers or do you know any training videos for repairing Avalon miners?

Yes you are right . it was a typo . My mother tongue is not English and I speak Persian.
When I turn on the device, the gh15d tripod regulator on the pmu board gets very hot.
I disconnected the boards from the device. and by multimeter bizer chech vcore and gnd . i see short circuit.
so I want to know exactly where the short is from and how to test ic a3210mt

Hi friends, I had a question about avalon 851. First, what is the way to detect bad Hashboard on avalon boards? Because these boards are in the status of vcc and gnd shorts now and they cannot be turned on. It turns on and the light turns green, but because it is a short, it give amper  from the power supply boards, which damage the power supplies