in some cases you need to replace your hard disk mother board
when to replace this board and how ???
please reply
Thanks

Are you talking about the printed circuit board mounted on a hard drive?hany321 wrote: ...hard disk mother board...
Nobody does this except the manufacturer under warranty. The boards are not available for purchase on the market.hany321 wrote:Yes
i mean the board mounted on the hard drive
David, in those days you could take a look at the circuit board controlling the harddrive and work on it. It was dual layer and it contained regular circuitry from established players on the market that did things like stepper and brushless DC motor drivers, they used regular logic circuits and other regular components so if you had manuals on those IC manufacturers, you could pick up the datasheets for those componets and actually understand what they did and do measurements to see if they were working like they should.davd_bob wrote:purrkur, hyperspace,
Frankly Im shocked and appalled ya'all gave such responses.
hany321,
In the old days(im talking late 80s, early 90s) sometimes a drive would boot a cold system but fail when it warmed up. Usually it was a failure in the circuit board on the drive. It was often easy to get a hold of a 2nd drive of the same model that would NOT boot a system(meaning a mechanical failure internally) and try swapping boards. Im talking about the days of MFM and RLL encoded 20-40meg drives. I have never tried to "fix" an IDE drive. Its usually easier to just get another drive.
I am against buying a new circuit board to repair a drive out of warrantee. If it has data that is actually necessary to be recovered send the drive to someone that specializes in that process.
btw, If you have 2 of the same drive and want to play around, feel free to try it.
Good luck,
David
Opps, me thinks me was more harsh then intended to my friends and advisors.purrkur wrote:davd_bob wrote:purrkur, hyperspace,
Frankly Im shocked and appalled ya'all gave such responses.
Its easier to rummage up a working drive of any model then locate a non-working one of the exact model to try a repair.purrkur wrote:Back in those days, harddrives/floppy drives were so expensive that it was worth the effort...davd_bob wrote: hany321,
In the old days(im talking late 80s, early 90s)...
Today harddrives are extremely cheap...
Probably none. In fact I don't know anyone who has had the luck to get their hands on two identical failed drives, one mechanical and one eletroniclly. Hence my coment about "if data needs to be recovered, send the drive to someone that specializes in that work."purrkur wrote:davd_bob wrote: David, the example you give (having two identical drives, one that is broken mechanically and another that is broken electrically) is the only example where I can think that changing the circuit board might work. But what are the chances of that happening??
Hehehe! Well, you didn't hurt my feelings but I thought that it was better to explain my first commentdavd_bob wrote:Opps, me thinks me was more harsh then intended to my friends and advisors.
HA !!hyperspace wrote:Don't sweat it! I'll be 47 on the 3rd. Skin is getting thicker.davd_bob wrote:Opps, me thinks me was more harsh then intended to my friends and advisors.purrkur wrote:
hany321 wrote:hi all
in some cases you need to replace your hard disk mother board
when to replace this board and how ???
please reply
Thanks