Jump to content

Apple Mouse Axle Bearing Repair

From RetroTechCollection
Macintosh M0100 mouse axle bearing posts (The Dead Mac Scrolls pp. 90-91)
The two bearing posts inside the M0100: left, the side-to-side axle's post; right, the up-and-down axle's post. Larry Pina, The Dead Mac Scrolls, pp. 90-91.

Each of the two interrupter axles in the Apple Mouse (M0100) is held at its end by a retainer on top of a split plastic post. When that retainer breaks, the axle no longer stays horizontal: it rides up on the ball, and the mouse jams when it is moved along that axis, hard enough to lift the mouse off the table.[1] Pina's repair is a new retainer cut from a wooden toothpick.[1] The M0100 was the mouse of the Macintosh 128K, Macintosh 512K, Macintosh 512Ke and Macintosh Plus.[2]

Symptoms

[edit | edit source]
  • The mouse jams when moved side to side, lifting off the table: the side-to-side axle's retainer is broken.[1]
  • The mouse jams when moved front to back: the up-and-down axle's retainer is broken.[1]
  • A pointer that moves erratically but does not jam is usually dirt on the capstans; Pina cleans them with the mouse fully opened.[3] A pointer stuck at one edge of the screen is a broken wire; see Apple Mouse Cable Repair.[4]

Tools and parts

[edit | edit source]
  • No. 1 Phillips screwdriver.[5]
  • A wooden toothpick and epoxy glue.[1]

Procedure

[edit | edit source]
  1. Switch off the computer, unplug the mouse and open it as in Apple Mouse Button Switch Replacement#Opening the mouse.[5]
  2. Find the bearing post for the axle that jams; the lead figure marks both. Check that the retainer at the top of the split post is broken.[1]
  3. Make a new bearing retainer from a piece of wooden toothpick and wedge it into the top of the broken post.[1]
  4. Test the mouse.[1]
  5. When the action along that axis is correct, cement the toothpick piece in place with epoxy. Glue the toothpick only, not the axle.[1]
  6. Let the epoxy set, then reassemble the mouse as in Apple Mouse Button Switch Replacement#Reassembly.[5]

Testing

[edit | edit source]
  • Move the mouse side to side and front to back on a flat surface. It should not jam or lift, and the pointer should follow in both axes.[1]
[edit | edit source]

References

[edit | edit source]
  1. ↑ 1.00 1.01 1.02 1.03 1.04 1.05 1.06 1.07 1.08 1.09 Larry Pina, The Dead Mac Scrolls (Peachpit Press, 1992), "Early Macs", pp. 90-91. Hosted as File:The Dead Mac Scrolls 1992.pdf; see The Dead Mac Scrolls.
  2. ↑ Larry Pina, Macintosh Repair & Upgrade Secrets (Hayden Books, 1990), ISBN 0-672-48452-8, chapter 12 "Mouse Repairs", p. 223 (PDF p. 237). Hosted as File:Macintosh Repair & Upgrade Secrets.pdf; see Macintosh Repair & Upgrade Secrets.
  3. ↑ Pina, Macintosh Repair & Upgrade Secrets, pp. 227-228 (PDF pp. 241-242).
  4. ↑ Pina, The Dead Mac Scrolls, pp. 85-88.
  5. ↑ 5.0 5.1 5.2 Pina, Macintosh Repair & Upgrade Secrets, pp. 225-227 (PDF pp. 239-241).


Retrieved from "https://retrotechwiki.com/index.php?title=Apple_Mouse_Axle_Bearing_Repair&oldid=29902"