Re: Disk drive problems.

[tomk@pro-nsdapple.cts.com (Tom Kelly)]

On 6 Dec 1995, Rob Thomson wrote:
 
> Hi,
> I have a number of Disk II compatible drives( a couple of full height and
>about 8 half height), most of these have problems.
>Some, when I plug it into the drive
> controller as drive 2, drive 1 which had previosly been working fine,
>starts corrupting disks. Also, apart from cleaning the heads and
>checking the drive speed, are there any other general fixing things
>I should be doing?
> Thanks,
>
Cyrus Roton wrote:
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I ran into the same problem. Had to replace a chip or two in the bad drive.
Don't remimber which chip(s). I think it was a 74LS----(three digit)
type. If you have several disks, you can swap chips (one at a time) to
find the bad one(s). That is how I did it. Be sure to use a working disk
which you dont mind getting corrupted when testing.
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That is the best way.  If you don't feel comfortable doing it yourself,
I will repair Apple Disk ][ Drives for $20.00 plus parts and shipping.
Send E-Mail for details.   PS It is usually just bad chips and less than $5.00
for parts.
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