Hello everyone I've got lot of Gpus for good buck and I'm trying to repair them watched few videos and got pretty good understating of basic voltage rails etc.
I came here for help with further diagnosing the problem which are occuring.

1. Vega 56
This card had blown mosfet on power stage 3 which took the doubler there aswell. Changed it from spare card. tried the card all voltage rails are present except the VCORE. On powerup it jumps to 0.9V and then drops to 0.
2. Vega 56
The same above things are happening but the difference is it was on power stage...

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