Re: 8250LP - Both drives read/write, cannot format

From: Francesco Messineo <>
Date: Mon, 21 Aug 2017 13:51:19 +0200
Message-ID: <>
On Mon, Aug 21, 2017 at 1:26 PM, Rob Clarke <> wrote:
> Confirmed, it's come up on this list a couple of times and has affected 100%
> of the drives I have opened in my 8250LP's and SFD 1001's.
> Finding the right parts is a little more complicated than usual as you need
> low profile components that stand more than 7-8mm above the drive controller
> board. I have a few baggies made up with the right replacements if you need
> them.

sorry to jump into this discussion (I wish I owned either a 1001 or
8x50 myself...), but assuming the leaky capacitors are electrolytics,
they can nowadays almost always be replaced with MLCC capacitors that
are both tiny and last forever.
Of course one should examine the actual circtuit to be sure, but if
they're the usual (for the '80s electronics) supply bypass or DC block
ones, the MLCC will work even better of the original.
I wouldn't dare using an MLCC in place of electrolytic as a switcher
output capacitor unless I really checked what I'm doing anyway.

> Rob
> On 21 August 2017 10:23:03 CEST, Julian Perry <>
> wrote:
>> Just a sanity check.
>> I've an 8250LP drive that I know was working well when I stored it. 4
>> years ago.
>> cracked it out today to check it out, as one does. :)
>> It happily reads and writes on a preformatted 8250 disk but will not
>> format on either drive (error23 track 1/17)
>> Can I assume it's a spindle speed error? Seems odd that it's affecting
>> both drives.
>> There's a little bell ringing in the back of my head telling me there's a
>> leaky capacitor problem on the motor controller board of these drives. Can
>> anyone confirm this?
>> Thanks.
>> Julian
> --
> Sent from my Android device with K-9 Mail. Please excuse my brevity.

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Received on 2017-08-21 12:02:04

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