WD5000BEVT-22ZAT0- Dead drive motor?

[gbulger]

I have a WD Mercury that had stiction. The heads were released but the drive does not spin and appears completely dead. The pcb from the dead drive works on an identical drive and the bad drive is still dead when I place a known to be good pcb on it. In my experience it is rare for a drive motor to fail in this drive series. Does anyone have experience with failed drive motors on these drives? Could it be a defective head assembly that is preventing spin up?

Thx
GB

[msurgeon]

Yes. Isolate heads and see if drive spins up.

[Sergey_TS]

Does it make any noise at all?
Did you measure the resistances of the motor windings and the voltages at the motor terminals after power-on?

It could be
- spindle motor bearing seizure
- problem with the spindle motor coils
- PCB malfunction, ROM is bad
- heads stuck in the drive working area

[gbulger]

Thanks guys

The customer took it back before I got a chance to try your suggestions.

GB

[Maxim_TS]

gbulger, please be free to contact ACE TS in ts.acelab.eu.com for fastest help.

[AJ2008]

place some paper between head contacts and known working PCB. If it spins now then preamp is bad. If still no spinning and PCB is good then motor is bad.

[Amarbir[CDR-Labs]]

Source of the post I have a WD Mercury that had stiction. The heads were released but the drive does not spin and appears completely dead. The pcb from the dead drive works on an identical drive and the bad drive is still dead when I place a known to be good pcb on it. In my experience it is rare for a drive motor to fail in this drive series. Does anyone have experience with failed drive motors on these drives? Could it be a defective head assembly that is preventing spin up?

Thx
GB

Sir ,
99.9% its the heads stack that is short and now does not let the motor spin due to this ,Please follow what other seniors told you