Hello everyone.
I'm new to this forum site.
I have a wd hdd model:WD500AACS SATA.
the Problem is that this hard disk is sometime detecting and some times not.
Some Time Motor spin and some time even if the motor spin it doesnt detected.
Is The Problem is with PCB or some where else .
Pls Help Mekk
Thank You all.

Hello ansarisuhail,

first try to connect drive o another computer. If remain undetected, then if data are valuable for you, contact pro data recovery service.
If drive works on another cmputer , try to replace power supply

Thanks for reply but i have already done that but dosent work for me.i have another hard drive of samsung which works fine. I checked my Motherboard but it is o.k ,the problem is within hard drive that i cant catch pls give me another solution when this hdd is got detected it work like a charm then after sometime it gone im confused help me .

Thanks for reply but i have already done that but dosent work for me.i have another hard drive of samsung which works fine. I checked my Motherboard but it is o.k ,the problem is within hard drive that i cant catch pls give me another solution when this hdd is got detected it work like a charm then after sometime it gone im confused help me .

Hello ansarisuhail,

first backup everything to another drive.
You can unscrew PCB and clean contacts J1 with pencil rubber. This contact could oxidate.
this contact shown by spildit on this link viewtopic.php?f=1&t=25549&hilit=rubber

All other steps depends on your knowledge, time and money which you want to spend on this drive.

And what is your purpose on this drive

as jerovsek said, clean contact.
If this do not work; maybe PCB problems, spin problems, or heads problems.