WD15EADS is busy for help

[z007]

WD15EADS-11P8B1 start to spindle , and always busy when power on,

no click click click voice

after about 3 minutes it spindle down

what ,s wrong ?
all HDD guru,help me Pls

[Nick_CT]

Spinds down = very good chance it's a head problem.

[z007]

Thanks for your answer , NICK

I find a donor disk ,but not sure the disk head compatibility


Wrong :
WD15EADS-11P8B1
DCM:HHNYHT2NH
DATE:08 DEC 2009
Head Map: 012345


Donor:
WD20EARS-00MVWB0
DCM:HHNNHTJMH
DATE:12 NOV 2010
Head Map: 012345

[northwind]

These drives are different families. It's better to find a Dragfly3 donor.

Nevertheless, what you suggest as a donor *might* work (I would try it), but it is safer to seek for a donor from the same family.

Are you experienced in head swap?

[Nick_CT]

I agree, knowing WDs there's a chance it will work, I've had success with some truly weird and wonderful combinations.

[hddguy]

WD15EADS-11P8B1 start to spindle , and always busy when power on,

no click click click voice

after about 3 minutes it spindle down

Did you test in software like MHDD to check status register? At power down do you see 'DRDY' + 'DSC' or just 'ERR' ?

You should give good diagnosis first. Spindle stopping is bad heads in maybe 90% cases, but other causes, like bad zone table for example. also result in stopping spindle.

[z007]

status register : BUSY IS ALWAYS ON,
at last ,BUSY is off,and ERR IS ON


I want to find a same modle disk to do hot swap , to check the firmware modle
but it is so difficult

So,I think i should try to swap the head , to try it !
nothing to do it!

[einstein9]

status register : BUSY IS ALWAYS ON,
at last ,BUSY is off,and ERR IS ON


I want to find a same modle disk to do hot swap , to check the firmware modle
but it is so difficult

So,I think i should try to swap the head , to try it !
nothing to do it!

z007 , i have a Q for you

are from India?

and if as you mentioned no clicking (from 1st. post) i would go for diagnosing your PCB 1st.
this is 701640 pcb, you should KNOW how to find its ROM ver. 1st. and start from there

good luck

[hddguy]

status register : BUSY IS ALWAYS ON,
at last ,BUSY is off,and ERR IS ON

Could still be problem with head, but you say is no clicking so I guess it is problem somewhere else

I want to find a same modle disk to do hot swap , to check the firmware modle
but it is so difficult

So,I think i should try to swap the head , to try it !
nothing to do it!

You want to make head change, BEFORE you make hotswap ,even though if problem is NOT heads you will only make condition worse??

If you have a part for head change, why cant this be used for hotswap?

It is bad practice to make head swap when you have not ruled out issues with SA first, especially since symptoms could suggest it is actually SA related.

Is this a client HDD?

[z007]

thanks for all guru 's post!

PCB is good, I had repalced it with ROM swap , problem is still

ROM file ,I had read it out !

those heads no compatibility! after head swap , it become to PCB mode,disk don't spindle,so I restore it

[einstein9]

hehehe, getting away or changing subject...

whatever... but i some how insist on PCB issue since i did not test it. it might be the key.

good luck

[Nick_CT]

whatever... but i some how insist on PCB issue since i did not test it. it might be the key.

What do you mean? He said he tried a new PCB and it did not help. Judging from the behaviour I highly doubt the PCB has anything to do with the problem anyway.