HTT722525DLA380

[rafaela]

No power to HDD.

Xronis

Attachments

[Russwinters]

Isolate heads connection, see if that makes difference


If powers on spins up then replace heads



If no,


Replace PCB, transfer external ROM and NVRAM

[fzabkar]

AFAICS, the locking tabs for the motor connector are in the locked position.

Did you release them before withdrawing the flex lead?

BTW, is that an IDE power connector at the top RHS???

[jono-ats]

Corrupted firmware can cause motor not to spin.

Jono

[craig6928]

check the fuses on the board the black tvs

you might get lucky

[networkpc3000]

i guess PCB is fine. check NV-RAM

[zebong]

Try to read the nvram and the rom.

and edit them to see if they are corrupeted.

[hddguy]

I ran some experiments with hitachi disks editing nvram, some tests resulted in failure to power. I think you should check nvram.

[beto]

Check PM

[quasimodo]

check the fuses on the board the black tvs

you might get lucky

I don't think this drive has any TVS.


Xronis,

If you are still working on this drive can you provide some more info as to what you already have tried?

[rafaela]

shortcut preamp and always "burn" the PCB NV-RAM










XRONIS

[quasimodo]

you have PM.