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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Repairing Seagate Barracuda Hard Disk
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 |
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