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M0100 Mouse Rusted - Help with Repair
Posted by: campbellashe on 2025-08-13 19:36:10
Wondering if I might get help identifying the rusted part(s) in this picture of the internals of a M0100 (the one with the single screw).

Got it used, not working and the insides were a bit of a surprise. I was hoping to replace the parts listed at RN1 and RN2. Anyone know the specs; I can't quite read the listing on the picture.

Is it worth the effort to repair?
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IMG_56E56C44-91FC-413D-BD9E-78DED13C149A.jpegtempImagebGpyee.jpg
Posted by: obsolete on 2025-08-13 21:10:40
Looks like 470 ohms and 10k ohms to me.
Posted by: bibilit on 2025-08-14 02:00:44
resistor network 10k Ohm 62 and 470 ohm to me (5 pin variant)

tinkerdifferent.com

Apple IIc mouse compatibility: some details, schematics, and a chip swap to fix compatibility

I have 4 Apple M0100 mice, and only one of them is compatible with my Apple IIc. There are plenty of references online to how some are compatible, and some aren't, but nothing definitive about how to identify them, or what is different about them. So I opened my mice up, and the 3 that aren't...
tinkerdifferent.com tinkerdifferent.com
Posted by: campbellashe on 2025-08-20 15:49:11
Thanks for the suggestions.
I have used the following replacements from Digikey:
a) 6 pin Res Array 3 Res 470 ohm 6SIP
b) 5 pin Res Array 4 Res 10k ohm 5SIP

I'm not sure if these are right? there are a lot of options on Digikey. Sorry if I don't have a clear understanding of what to purchase.


The other trouble shooting and fixes I performed;
a) Wire at mouse harness replaced; cut out length of culprit wires and re wired to mouse; all continuity checked out
b) Resoldered connections on board
c) Checked continuity of connections

With the resistors in place; the button functions but no movement in any direction; only a mild stutter of the mouse with side to side and up and down movement.

Next steps?
a) Are the resistors correct
b) Do I need to replace any other component
c) Any other suggestions?

Thanks
Posted by: bibilit on 2025-08-21 22:41:57
I will look for a good 5 volt Line all around.

Check also for any bad trace
Posted by: campbellashe on 2025-08-27 18:01:48
I found my problem; accidentally bought an isolated vs. a bussed 6 pin array. Put the bussed in and an all is working.
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