apple Lisa2. Any advice on non-working floppy drives?

[terry stewart]

Alex, so you really think this might be the cause?  The web-info I've read 
on the Lisa suggests it's usually the pads that wear out causing 
non-responsive keys and that these should be replaced.  However what's odd 
is...

1. All the keys feel very firm, with no sign of the "mushiness" mentioned in 
some of the info.
2. ALL the keys expect for one (in two keyboards) are not working AT ALL no 
matter how hard you press.  Yet the '4' in one and the '/' in another are 
working fine and with no pressure needed at all?  In the third keyboard NONE 
are working.

It would be great if the problem wasn't the pads, but something more easy to 
fix.  It's hard to believe the pads could deteriorate 100% on all keys bar 
one.  And on that one they are fine?  Anyone on the list had experience with 
Lisa keyboards and could comment?

I'll be opening them up in the next day or so so I guess I'll soon see.

Terry



----- Original Message ----- 
From: "Alexandre Souza - Listas" <pu1bzz.listas at gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts" 
<cctalk at classiccmp.org>
Sent: Thursday, December 23, 2010 12:46 AM
Subject: Re: apple Lisa2. Any advice on non-working floppy drives?


>> Well, not quite.  One has the '4' key working on the keypad, the other 
>> has the '/' key working.  But that's it.
>
>    Terry, if ONE of the keys is working, there must be a stuck key or a 
> bad contact in the connector betweek the controller board of the keyboard 
> (inside it, of course) and whatever brings the switch contacts to it 
> (probably a membrane). I'm sure you'll be very lucky on that :)
>
>