cpm1993 wrote:
Dead PreAmp on HDA maybe ?
With isolated heads would still not spin. So it can't be the HDA.
fzabkar wrote:
Measure the resistances between ground and pins 1, 4 and 6 at the HDA connector. These are the preamp's power pins.
pin 1 = 2.2 ohm
pin 4 = 335.5 Kohm
pin 6 = 18.16 kohm
bcometa wrote:
Try PCB swap.
I don't have one like this and time is of the essence.
I could order one pretty cheap but it takes a week to get to me.
fzabkar wrote:
MasterT wrote:
I tried with different rom versions but would not spin.
Your PCB's external ROM (U12) is unpopulated, so did you replace the PCB, or did you reprogram the MCU's internal ROM?
Be aware that your MCU (88i6745) is known for "head mimic" faults.
You are right. I reprogrammed MCU's internal ROM with different fw versions because i thought maybe pcb was swapped and incorrect fw it the cause for not spinning.
Can someone confirm that WD7500AAKS-00RBA0 goes with pcb 2060-701474-002?
It could be entirely different pcb with different MCU.
Drive has been to a computer repair shop before, and they are notorious for trying pcb swaps.
Thannks.