"sg" wrote in message
oups.com...
Hi all,

I have damaged my hard disk while trying to connect a laptop hard disk
to the system. The machine was working perfectly, and I have reasons to
believe that what has occurred is a failure in the drive electronics. I
am posting my query to this newsgroup to see if anyone can suggest
possoble ways to check and repair the drive.

My system consists of an ASUS A7v m/b and the hardisk was connected to
the Promise PDC2025 UDMA controller via an 80 conductor cable.

What I was doing was to try and connect a laptop/notebook harddisk as a
slave device. Since, the laptop interface consists of 44 pins, we had a
small adapter that plugs in to the power supply and gives power to the
relevant pins. It seems that inadvertently, I powered one of the data
lines and the harddisk got damaged.

If I connect the hardisk to a normal IDE connector, my system hangs
while trying to detect the IDE devices. If I connect it to the UDMA 100
(Promise) controller, the controller BIOS does not load saying that "No
PDC2025 chip found". Also, I can't seem to feel the motors running.

Any ideas as to how I can troubleshoot/repair the disk. I have a guess
that some connections have blown up.
Many thanks for any ideas whatsover.

Thanks & regards,

Sachin


You probably fried the controller chip on the drive, not much you can do to
repair it. If you have data on there you need then sometimes you can recover
it by swapping over the board from an identical drive, this doesn't always
work though.