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From: BigAl.NZ on 11 Nov 2007 02:52
Hi Guys,

Does anyone have any spare/broken laptop drives lying around?

I have a Toshiba 2.5" PATA MK8025GAS (80GB) drive and I think the
drive is fine but the circuit board is dead (someone put the connector
on the wrong way - which means +5v went through DD7 and DD8)

I would like to try replacing the circuit board, but dont have one of
these drives.

Contact me @ bigal(a)hotmail.com if you can help.

Or if you think you can enlighten me as to which component is the
diode in the pics below then please tell me, remember that the +5v
went through DD8 and DD7 pins, which connects to RM2 - I have no idea
what RM2 is.

Cheers

-Al

Pics here:

[URL=http://img162.imageshack.us/my.php?image=circuit1uk3.jpg]
[IMG]http://img162.imageshack.us/img162/1976/circuit1uk3.th.jpg[/IMG][/
URL]

[URL=http://img91.imageshack.us/my.php?image=circuit2hi9.jpg]
[IMG]http://img91.imageshack.us/img91/5097/circuit2hi9.th.jpg[/IMG][/
URL]

From: HapticZ on 11 Nov 2007 10:25
i have done a reverse connect on these with no damage

try another drive and see if its the computer rather than the drive




From: BigAl.NZ on 11 Nov 2007 13:20

> The three pin device at the far right side of this pic is D1 (only two
> pins are active, so yes it is a diode), and that may be a protection
> diode, as it is near F1, which is likely a fuse, but I didn't see that.

You are probably quite right, but since the connector was put on the
wrong way, the +5v went through the connectors at the other end.

On a 44pin ide pinout diagram they are normally labelled DD7 and DD8.

In the second picture you can see it labelled RM2. From the connector
DD7 and DD8 seem to go straight to this componenet, whatever it is.
There is also a RM3 and RM4.

-Al

From: BigAl.NZ on 11 Nov 2007 13:22

HapticZ wrote:
> i have done a reverse connect on these with no damage
>
> try another drive and see if its the computer rather than the drive

I have tried it in my desktop and the original laptop it came out of,
neither of them detect it in the bios, and I cant even hear the drive
spool up :-(

From: HapticZ on 12 Nov 2007 10:27
yeah, that does sound bad,

but they can be near silent when the do run too!

runn it to a local pcshop, ask the guy to give it a check.

for $10 buks it may be worth it if you had any good data on it. else you
might sell it for parts on ebay!


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