Kensington Mouse-in-a-Box (ADB) on Mac OS 7.6.1? — #7

Post #7 by Floofies

Source Forum	68kMLA
Category	Peripherals
Post Date	Mon, 3 Aug 2015 - 15:56
Original URL	https://68kmla.org/bb/threads/kensington-mouse-in-a-box-adb-on-mac-os-7-6-1.2456/

Post

Elfen said:
Replace the two caps you got up there by the wire harness. Though they look clean, any electrolytic caps older than 10 years should be suspect for replacement because they would leak over time.

Also, to me, it looks it took a soda bath long ago. Just before removing the caps:

- Dunk in warm water to loosen up and remove the old sugar.

- Then dunk and rinse out in acetone to remove any cap goo.

- Lastly rinse out in high proof alcohol (I use 70% or higher Isopropyl when I can find it.) and then let dry.

Without powering up the unit, it is hard to tell if the LEDs are Red or IR. A continuity check of the cable would be best.

Ahhh! So that's what that weird shiny buildup is! I assumed it was glue or something! I'll definitely give it a good bath now. I have 70% Isopropyl as well.

I did a check on the cable, and only 2 of the pins go all the way to the PCB: pins 1 and 3.

As far as I can tell, pins 4 and 2 don't matter for mice as they're for ground and the "power on" signal.

I also found that the metal plug (the mini-DIN casing) also registers on pin 1 with my voltmeter. Since pin 1 is for data... wouldn't that make it ground out?