broken pin on the IDE interface

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Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

I was sleepy and plugged the IDE cable in the reversed direction
into the IDE port of the drive and broke its pin 21 (DMARQ).
Is there an easy way to repair it?

The drive could still be used, but could only work in PIO mode.

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Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

"toylet" <toylet@mail.hongkong.com> wrote in message
news:slrncb2o3s.2qr.toylet@server.donkeyware.org...
> I was sleepy and plugged the IDE cable in the reversed direction
> into the IDE port of the drive and broke its pin 21 (DMARQ).
> Is there an easy way to repair it?

Depends how good are you with a soldering iron. Back up the data first if
the drive is still working.

You could try making a special cable. This is harder to do if the connector
on the drive is SMD but easier if it's a thro hole type. Find that wire in
the ribbon cable and using a scalpel cut carefully to separate out a short
length from the other 79. Strip the end and solder on a short extension to
create a longer tail tail. Plug the cable back into the drive and solder the
other end of the tail directly to the pcb on the drive.
 
Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

Previously CWatters <colin.watters@pandorabox.be> wrote:

> "toylet" <toylet@mail.hongkong.com> wrote in message
> news:slrncb2o3s.2qr.toylet@server.donkeyware.org...
>> I was sleepy and plugged the IDE cable in the reversed direction
>> into the IDE port of the drive and broke its pin 21 (DMARQ).
>> Is there an easy way to repair it?

> Depends how good are you with a soldering iron. Back up the data first if
> the drive is still working.

> You could try making a special cable. This is harder to do if the connector
> on the drive is SMD but easier if it's a thro hole type. Find that wire in
> the ribbon cable and using a scalpel cut carefully to separate out a short
> length from the other 79. Strip the end and solder on a short extension to
> create a longer tail tail. Plug the cable back into the drive and solder the
> other end of the tail directly to the pcb on the drive.

I have done this sucessfully in an SCSI device. Make sure the cable is
not much longer or shorter than the other ones. I also attempted a
pin replacement once, it is not wirth the effort IMO. You need to
find a compatible pin, solder it in and then fixate it with epoxy.
A lot of work and quite a mess.

Arno


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For email address: lastname AT tik DOT ee DOT ethz DOT ch
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"The more corrupt the state, the more numerous the laws" - Tacitus
 
Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

"Arno Wagner" <me@privacy.net> wrote in message news:2hem5oFc1to5U1@uni-berlin.de...
> Previously CWatters <colin.watters@pandorabox.be> wrote:
>
> > "toylet" <toylet@mail.hongkong.com> wrote in message
> > news:slrncb2o3s.2qr.toylet@server.donkeyware.org...
> >> I was sleepy and plugged the IDE cable in the reversed direction
> >> into the IDE port of the drive and broke its pin 21 (DMARQ).
> >> Is there an easy way to repair it?
>
> > Depends how good are you with a soldering iron. Back up the data first if
> > the drive is still working.
>
> > You could try making a special cable. This is harder to do if the connector
> > on the drive is SMD but easier if it's a thro hole type. Find that wire in
> > the ribbon cable and using a scalpel cut carefully to separate out a short
> > length from the other 79. Strip the end and solder on a short extension to
> > create a longer tail tail. Plug the cable back into the drive and solder the
> > other end of the tail directly to the pcb on the drive.
>
> I have done this sucessfully in an SCSI device. Make sure the cable is
> not much longer or shorter than the other ones. I also attempted a
> pin replacement once, it is not wirth the effort IMO. You need to
> find a compatible pin, solder it in and then fixate it with epoxy.
> A lot of work and quite a mess.

Yeah, cutting out and stripping and extending a wire in a
fragile cable is obviously much cleaner and far more secure.

>
> Arno
>
>
> --
 
Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

"Folkert Rienstra" <see_reply-to@myweb.nl> wrote in message
news:2hfnu3FcevkgU3@uni-berlin.de...

> Yeah, cutting out and stripping and extending a wire in a
> fragile cable is obviously much cleaner and far more secure.

Far from it. But it is easier for a "beginner" to do this than try and
replace the connector.
 
Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

Previously CWatters <colin.watters@pandorabox.be> wrote:

> "Folkert Rienstra" <see_reply-to@myweb.nl> wrote in message
> news:2hfnu3FcevkgU3@uni-berlin.de...

>> Yeah, cutting out and stripping and extending a wire in a
>> fragile cable is obviously much cleaner and far more secure.

> Far from it. But it is easier for a "beginner" to do this than try and
> replace the connector.

In addition the "bypass" is reversible. If you botch the pin repair,
you will actually need to replace the complete connector which is

a) difficult and time-consuming, depending on what type it is
b) difficult to get a matching replacement
c) needs special tools

Arno
--
For email address: lastname AT tik DOT ee DOT ethz DOT ch
GnuPG: ID:1E25338F FP:0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
"The more corrupt the state, the more numerous the laws" - Tacitus
 
Archived from groups: comp.sys.ibm.pc.hardware.storage (More info?)

Previously CWatters <colin.watters@pandorabox.be> wrote:

> "Folkert Rienstra" <see_reply-to@myweb.nl> wrote in message
> news:2hfnu3FcevkgU3@uni-berlin.de...

>> Yeah, cutting out and stripping and extending a wire in a
>> fragile cable is obviously much cleaner and far more secure.

P.S.: If you think standard 1.27mm flat cable is fragile, then you
obviously have "wurstfinger"....

Arno
--
For email address: lastname AT tik DOT ee DOT ethz DOT ch
GnuPG: ID:1E25338F FP:0C30 5782 9D93 F785 E79C 0296 797F 6B50 1E25 338F
"The more corrupt the state, the more numerous the laws" - Tacitus
 
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