Seems to be some kind of electrical fault but where exactly? My primary suspicion is with the pins that stick out of the back of the motor into the PCB. Any other suggestions or even a way to fix? Replacement PCB does not do the trick.

how many flashing did u got? 2 , if u hdd spin up "flashing led" , motor stop, and start again at that moment changes the spindle revolution " again another flashing led," , and maybe its a MHA problem, i dont remember if its the correct, steps, but its possible get by terminal, to know what´s happening, that need´s special adapter, if u dont know or dont have send to a Data recovery even a head swap on Quantum its hard job to did

Best Regards

Alberto

Hi,

I can think of 3 things:
1. Problem with the motor controller,
2. with the motor itself,
3. Preamp is gone inside the HDA.

First swap the PCB with a good one to see if that causes the problem.

pepe

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Adatmentés - Data recovery