Dear Friends
I want to know how can I check Desktop hard disks PCB (WD /Seagate particularly).
I also want to know which is best pocket multimeter for accurate checking ( for onsite field testing)
Design of all pcb's is different but there will be standard common components like diode or voltage regulators or fuse etc .
This will help me to give to new technians and for myself as well.
Thank you.

I wrote several tutorials on the subject at the HDD Oracle, but the resource has now become essentially unusable.

As for multimeters, any cheapie will be more than adequate.

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A backup a day keeps DR away.

Thanks a lot. I have downloaded hddoracle website so I will check. I think its been written by you so it will be definately comprehensive technically.
It will be very much useful to begin with.

Here are two of my tutorials:

http://www.hddoracle.com/viewtopic.php?f=100&t=1615 (PCB protection devices)
http://www.hddoracle.com/viewtopic.php?f=59&t=231 (Linear and Switchmode Regulators used in HDDs)

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A backup a day keeps DR away.

Most comprehensive and with proper diagrams , illustrations etc. Appreciate all the efforts taken.
Thank you so much.