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.

Reply
 
LinkBack Thread Tools Search this Thread Display Modes
  #1   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 2
Default Hard Drive Diagnostics

hello,
I have a few HDs that don't seem to power up. I see where people on this
board are swapping out controller boards, and chips on the board.

at the risk of sounding like the village idiot, how are you troubleshooting
the bad boards or the drive in general. do I need a multitude of $$$$ test
equipment or ? any help would be appreciated.

thanks


  #2   Report Post  
Posted to sci.electronics.repair
Ken Ken is offline
external usenet poster
 
Posts: 103
Default Hard Drive Diagnostics

mobile wrote:
hello,
I have a few HDs that don't seem to power up. I see where people on this
board are swapping out controller boards, and chips on the board.

at the risk of sounding like the village idiot, how are you troubleshooting
the bad boards or the drive in general. do I need a multitude of $$$$ test
equipment or ? any help would be appreciated.

thanks



By "Not powering up" do you mean not spinning? If the drive is not
spinning with just power applied it could be two things assuming that
power is reaching the HD. First old drives sometimes fail to start due
to the heads sticking to the disks. Tapping the drive against the palm
of your hand while power is applied will sometimes free them. It is a
temporary fix however and the data should be copied if it is needed.

The second most likely fault is a bad logic board. Although it is
possible that the motor is faulty, it is rare. Swapping out a logic
board is a fix for a faulty board, but you need to find one just like
the old one. Sometimes it requires the same ROM series rather than just
the model number of the HD. For what it is worth, many times the fault
on the PWBs are open chokes. If you find one it is easy to replace it
with one from a scrap PWB.

As for test equipment, I would think that a good DVM would be the only
tool required for trouble shooting the PWBs. It is alway nice to have
more equipment, but since many ICs are custom made, it is highly
unlikely that a replacement is readily available. At least that has
been my experience.
  #3   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 1,245
Default Hard Drive Diagnostics


"mobile" wrote in message
. net...
hello,
I have a few HDs that don't seem to power up. I see where people on this
board are swapping out controller boards, and chips on the board.

at the risk of sounding like the village idiot, how are you
troubleshooting the bad boards or the drive in general. do I need a
multitude of $$$$ test equipment or ? any help would be appreciated.


Not what you asked for but http://www.grc.com/intro.htm





  #4   Report Post  
Posted to sci.electronics.repair
external usenet poster
 
Posts: 2
Default Hard Drive Diagnostics

thank you for your suggestions,
"Ken" wrote in message
...
mobile wrote:
hello,
I have a few HDs that don't seem to power up. I see where people on this
board are swapping out controller boards, and chips on the board.

at the risk of sounding like the village idiot, how are you
troubleshooting the bad boards or the drive in general. do I need a
multitude of $$$$ test equipment or ? any help would be appreciated.

thanks



By "Not powering up" do you mean not spinning? If the drive is not
spinning with just power applied it could be two things assuming that
power is reaching the HD. First old drives sometimes fail to start due to
the heads sticking to the disks. Tapping the drive against the palm of
your hand while power is applied will sometimes free them. It is a
temporary fix however and the data should be copied if it is needed.

The second most likely fault is a bad logic board. Although it is
possible that the motor is faulty, it is rare. Swapping out a logic board
is a fix for a faulty board, but you need to find one just like the old
one. Sometimes it requires the same ROM series rather than just the model
number of the HD. For what it is worth, many times the fault on the PWBs
are open chokes. If you find one it is easy to replace it with one from a
scrap PWB.

As for test equipment, I would think that a good DVM would be the only
tool required for trouble shooting the PWBs. It is alway nice to have
more equipment, but since many ICs are custom made, it is highly unlikely
that a replacement is readily available. At least that has been my
experience.



Reply
Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules

Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
Thread Thread Starter Forum Replies Last Post
UPDATE: CD Rom Drive and Floppy Disk Drive, Same Type of Problem at the Same Time!!! Brad Electronics Repair 0 September 16th 06 01:14 PM
What Brand Hard Drive?? talented79 Electronics Repair 3 April 25th 06 01:16 AM
hard drive repair Ben Galvin Electronics Repair 18 September 29th 05 04:08 PM
Unusual hard drive noise. Dan Electronics Repair 13 March 18th 05 03:01 AM
need advice on data recovery service company alfonso gayoso Electronics Repair 4 February 18th 04 07:48 PM


All times are GMT +1. The time now is 02:29 AM.

Powered by vBulletin® Copyright ©2000 - 2023, Jelsoft Enterprises Ltd.
Copyright 2004-2023 DIYbanter.
The comments are property of their posters.
 

About Us

"It's about DIY & home improvement"