i have got my hdd wd1600aajs-22dsao spindle motor not moving nor it is being detected by bios my pcb seems to be fine (sprakling shiny )nothings seems to be burnt or damaged plz tell me what the problem might be plz help geeks my pcb specifications are as follows:-
hdd motor combo ic : smooth l6283 3.1
main controller ic: 8816745tfj1
synchronous dram : mt 48lcm16a2

One you can try to test this with a volt meter check previous posts here for your testing points.

Two if you do decide to do a pcb swap move over ROM it holds all adaptive data on it this is well documented here on the forum

Three you can test another pcb to see if the drive will spin up and work. If this board burns then game over the problems is not in the pcb it is internal to the HDD and needs to have professional help on this one

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Iorana Haraharaini

i think the culprit might be this D1 which have readings while testing it with voltmeter in diode mode both ways i have circled it its just below D2

Q3 & Q4 transisitors shows the same characterstics while checking them by pushing the voltmeter to resistance mode here is the pic i am attaching here of my multitester plz tell did i use the right slot to check ! the resistance & continuity

i have checked D1 its ok by removing it from pcb by multitester in diode mode multimeter setting as shown in above pic

what to do next plz help! should I go to replace motor ic smooth L6283 3.1 or check something else plz guide me geeks

@unnu,

Here are a few comments - you can consider them or ignore them, your choice

a) I will ask for this thread to be moved to the "Hard Disk Drives: data recovery and repair" section - this is not a new technology discussion, so you started it in the wrong place. Check that section, if you can't find the thread in its current place

b) Some of us may not particularly like being called "geeks". I suggest you stop that - but it's your choice

c) It may help if you describe the history of this drive - what changed between the last time it was working correctly, and now? Was the drive used externally or was it always inside a PC? Does it make any sound at all when power is applied?

d) Instead of continuing with your (IMHO seemingly random) component testing, you could consider replacing the whole PCB, if you are determined to continue with DIY (and its associated risks). There are plenty of threads here about replacing WD PCBs.

Personally, with your random approach, I don't think it's sensible for me to try to help further, but good luck!

[Edited to add: I just saw that poehere made some of the same suggestions, but I scrolled over that posting - sorry for the duplication, but it just confirms that you don't seem to be following (or replying to) previous suggestions either... ]

there was no noise as i remember in the hdd or might its being supressed by the fan noise i cannot say correctly .
the problem is blue screen of death (BSOD) some virus got stuck in to my pc which let the pc to blue screen with written like physical dumping of memory but i ignore that & restart pc constanly & moreover i do not format my pc to get rid of blue screen.
Everything was working fine suddenly the windows crashed let me to blue screen written dumping physical memory i restart the pc but my bios didn't find or detect my hdd so i check the hdd by touching it .It freezes like dead the motor is not moving at all Thats my story of hdd.

where i can find the whole pcb? bro

sorry to say but here i posted mistakenly some wrong information my hdd is WD1600aajs-22psao & motor ic SMOOTH L6284 3.1

I don't know why you're blaming a virus for the BSOD.


I've seen many faulty hard disks cause BSOD, and if your disk is not detected by the BIOS, then that is not a virus problem. It would require analysis of the BSOD dump/mini-dump to confirm the exact reason, but I think discussion about the virus is probably just a distraction.


If you are continuing with the DIY risks, and the data is not valuable, then you could search the forum here for discussions about replacing WD PCBs (e.g. internal or external ROM) and you can ask for suppliers in the Hard Drive Market section of the forum:

hard-drive-market-f15.html

I haven't seen many disks as you did as I m not an engineer
so i thought it & moreover i think this beacuse after bsod i just press my restart button rather than finding reasons for bsod ,I restart pc many times moreover constant sudden power failure might be the cause for hdd death
Please sir tell me what might be wrong in pcb every thing looks fine nothing looks burnt or bruised i eagerly wants to repair that pcb please guide how to check the components !

i have checked all diodes on board(not by removing them from board except D1) they seems to be perfect all ics looks in good condition what does C stands for here on pcb & what is Y

i am guessing ....
do constant restarting or crashing of pc due to power failure removes the firmware or something like that stored on the chip so replacing main controller ic 88i6745-tfj1 or dram ic mt 48lcm16a2 might do the job or can we put back the erased firmware back to it
HELP

95% of important part firmware is on the disk's platter, not on PCB

after doing some home work on my pcb, i.e I remove some cap resolder them remove one resistor resolder it after that i m thinking of some miracle so i connect pcb to hard disk & hard disk to pc but hard disk did not awake but lead me to ununpleasent smell i remove the harddisk & pcb & finds that one of its Q4transistor got burnt i removed it here is it s pic after removing Q4 transisitor
after replacing that do i have got chance to revive my hard disk

Seems like all good advice has gone to deaf ear and you do not take good advice. Now I think people will no longer answer you and do as you wish on this one. Sorry you are not listening to all the good advise given to you. Seems you know more than we do and it might be best if you just do as you wish and not report back what you have done.

Here we see this all the time and after so many attempts and failure they finally decide to listen to us but it is way too late now. It is your HDD, your data, and your choice on what you want to do now.

I told you from beginning get another pcb board and swap it out. If the hdd spins up then all you have to do is move over ROM to get back your data. Hope you have not destroyed all your chances in this one. Good luck

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Iorana Haraharaini

@poehere,

I agree with everything you're saying, except I just noticed something - his PCB has no external U12 chip (check the Marvell chip number and the very first photo in this thread) So DIY is harder, of course...

It's a little harder, but there are relatively cheap tools (eg WDR-UDMA or WD HD Pro) that can do this job. The total cost should be less than US$200, or even as low as US$100.

I would have added my input earlier, but the OP insists on writing in SMS-ese ...

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A backup a day keeps DR away.

Agreed, and I thought about looking for one of your previous posts on this topic to link, when I was replying above.

But after seeing that the OP has damaged his PCB in random attempts to fix it, despite previous advice, I decided not to bother wasting my "virtual breath" on comments which are just going to be ignored anyway. Also, I wouldn't bet that those tools will work with the existing PCB in its current state (seeing the OP's reluctance to get a replacement PCB), but that is only my guess.