General Category > Lisa Troubleshooting and Repair

Rear drive head pad has become dislodged. Any repair tips?

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Kelly king:
   Yes…
   It includes pad and stem with lips on end. I used this only on a 400k drive.
   Fits and works perfectly . Sorry didn’t know you were posting about a Twiggy
   drive.

ried:
After removing the digital (lower) board, the alien becomes easily accessible from underneath. Mine did have some adhesive underneath it, which may indicate a previous repair? In any case, wasn't too difficult to remove. Should be fairly straightforward when it comes time to clean the remnant from the old head pad and install the replacement material.

I'm hoping that the adhesive already on the back of that 1/16" felt proves suitable. We shall see.

ried:
Photos for posterity. You don't see this view every day...

sigma7:

--- Quote from: ried on August 09, 2025, 03:59:43 pm ---You don't see this view every day...

--- End quote ---

Many days I do :)

It may be the lighting, but the front head looks pretty dirty (presumably only due to your recent archiving efforts... thanks for those!) ... I find the rear one is often worse.

"Before and after cleaning" pictures may be helpful to someone someday.

Very nice condition otherwise!

ried:

--- Quote from: sigma7 on August 09, 2025, 05:04:00 pm ---Many days I do :)

--- End quote ---

Of all people, yeah  ;D

This is one of two drives I've been using to test and image old disks, and it's definitely encountered some crusty examples. If all goes well with the felt pad replacement, I'll probably change them all out and give each drive a thorough cleaning. I still have several old Twiggies to go through (Smalltalk 80, Monitor II, etc) but examples of most have already been archived.

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