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HTT722525DLA380

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rafaela

Post subject: HTT722525DLA380

Posted: April 2nd, 2010, 5:12

Joined: February 1st, 2008, 17:01
Posts: 208
Location: Europe Greece

No power to HDD.

Xronis

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583_hitachi merged.jpg [ 252.08 KiB | Viewed 7391 times ]

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Russwinters

Post subject: Re: HTT722525DLA380

Posted: April 2nd, 2010, 12:04

Joined: July 16th, 2008, 17:52
Posts: 489
Location: Long Beach, California

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

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fzabkar

Post subject: Re: HTT722525DLA380

Posted: April 2nd, 2010, 18:40

Joined: September 8th, 2009, 18:21
Posts: 16972
Location: Australia

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???

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jono-ats

Post subject: Re: HTT722525DLA380

Posted: April 2nd, 2010, 20:11

Joined: June 8th, 2006, 19:44
Posts: 3144
Location: Atlanta, GA

Corrupted firmware can cause motor not to spin.

Jono

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craig6928

Post subject: Re: HTT722525DLA380

Posted: April 2nd, 2010, 21:24

Joined: February 15th, 2006, 3:38
Posts: 1079
Location: canada

check the fuses on the board the black tvs

you might get lucky

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networkpc3000

Post subject: Re: HTT722525DLA380

Posted: April 3rd, 2010, 2:51

Joined: December 16th, 2007, 10:26
Posts: 1151

i guess PCB is fine. check NV-RAM

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zebong

Post subject: Re: HTT722525DLA380

Posted: April 3rd, 2010, 7:36

Joined: December 24th, 2007, 16:08
Posts: 1421
Location: EUROPE

Try to read the nvram and the rom.

and edit them to see if they are corrupeted.

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hddguy

Post subject: Re: HTT722525DLA380

Posted: April 3rd, 2010, 13:13

Joined: November 9th, 2006, 15:15
Posts: 2984

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

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beto

Post subject: Re: HTT722525DLA380

Posted: April 4th, 2010, 13:24

Joined: October 21st, 2005, 0:45
Posts: 1517
Location: Mexico

Check PM

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quasimodo

Post subject: Re: HTT722525DLA380

Posted: April 4th, 2010, 13:31

Joined: October 23rd, 2006, 8:56
Posts: 1336

craig6928 wrote:

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?

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rafaela

Post subject: Re: HTT722525DLA380

Posted: April 6th, 2010, 3:59

Joined: February 1st, 2008, 17:01
Posts: 208
Location: Europe Greece

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

XRONIS

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quasimodo

Post subject: Re: HTT722525DLA380

Posted: April 6th, 2010, 10:25

Joined: October 23rd, 2006, 8:56
Posts: 1336

you have PM.

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