[comp.sys.mac.hardware] Classic Mice microswitches

rob@cs.aukuni.ac.nz (Rob Burrowes ) (06/25/91)

We are having a large number of Classic mice microswitches fail. We
have wait several weeks for a replacement mouse from our local distributor.
We would like to replace the microswitches ourselves ( a five minute job) but
can't find a source for these switches. They are about 13mm x 5mm (1/2 by
1/4 inches) approx size. Does anyone know of a source for these?


-- 

Rob Burrowes                   rob@cs.aukuni.ac.nz.
System Admin
Computer Science Dept., Auckland University, Private Bag, Auckland, New Zealand

steveh@tasman.cc.utas.edu.au (Steven Howell) (06/25/91)

	Just quietly, I have replaced inxs of 20 mice in the last months...
this is an abnormal failure rate... but anyway, i might make a lampshade out of
the dead ones..... I am expecting far more failures, i have stocked up with
about 20 new service stock mice.. it seems to only happen with the plastic
ball models.



steve 

pvo@cactus.org (Peter Van Overen) (06/26/91)

I read in one of the Mac magazines 2 or 3 years ago that there was a microswitch
sold at Radio Shack that was a good fit in a classic mouse.  This assumes you
meant the old Mac Plus type mouse, and not the New, Improved Classic Mouse, 
which should still be under warranty. I haven't had to fix the microswitch in
my old Plus, so I haven't had to find out if this works or not.....

rob@cs.aukuni.ac.nz (Rob Burrowes ) (06/26/91)

In <steveh.677855090@tasman> steveh@tasman.cc.utas.edu.au (Steven Howell) writes:

>	Just quietly, I have replaced inxs of 20 mice in the last months...
>this is an abnormal failure rate... but anyway, i might make a lampshade out of
>the dead ones..... I am expecting far more failures, i have stocked up with
>about 20 new service stock mice.. it seems to only happen with the plastic
>ball models.

>steve

We have had a similar failure rate. Hence the original question. So far
the only replies I have had have been requests from people to tell them
where they can get the switches when I find out.

Our local Apple Distributor says this is a known problem and they can't
import replacement mice fast enough. A mouse mobile would be nice, but
they insist on having the dead mice returned so they can throw them away
instead of us.

-- 

Rob Burrowes                   rob@cs.aukuni.ac.nz.
System Admin
Computer Science Dept., Auckland University, Private Bag, Auckland, New Zealand

ccjapu@uta.fi (Jarmo Puntanen) (06/27/91)

The microswithes in Mac mice are of the subminiature type. These should
be carried by a number of suppliers as standard parts. Do not, however,
expect t find them in the corner shop. You should ask for swithes with
printed circuit pins, not with soldering hooks, unless you are willing
to carve the mounting holes wider. The pin in the middle has an offset,
but a linear spacing type can be made to fit (see above). If you can lay your 
hands on an ex-operation PC-type mouse, the replacement part may lay there!
(Or steal the middle one of the 3-button PC-type, nobody will notice.)

Jarmo Puntanen, Tampere University Computer Centre, Finland.

rob@cs.aukuni.ac.nz (Rob Burrowes ) (06/28/91)

In <7760@cactus.org> pvo@cactus.org (Peter Van Overen) writes:


>I read in one of the Mac magazines 2 or 3 years ago that there was a microswitch
>sold at Radio Shack that was a good fit in a classic mouse.  This assumes you
>meant the old Mac Plus type mouse, and not the New, Improved Classic Mouse, 
>which should still be under warranty. I haven't had to fix the microswitch in
>my old Plus, so I haven't had to find out if this works or not.....

No I meant the brand new "Classic" mice. Yes they are under warranty. We
just can't get replacements fast enough.
-- 

Rob Burrowes                   rob@cs.aukuni.ac.nz.
System Admin
Computer Science Dept., Auckland University, Private Bag, Auckland, New Zealand