Kensington Mouse-in-a-Box (ADB) on Mac OS 7.6.1? — #8

Post #8 by Floofies

Source Forum	68kMLA
Category	Peripherals
Post Date	Tue, 4 Aug 2015 - 01:45
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.

Okay so, I left it in warm water for about 5 minutes, and rinsed it with alcohol. I don't have any acetone, but I didn't see any leakage whatsoever around the caps before the wash.

No effect, I think... I decided to bust out the voltmeter again and test it while plugged in and powered. Between Pin 1 + pins 3, and whatever the Red cable is, there's about 0.033 Volts DC going between them. I also tested the caps, and 0.044 Volts DC are going through those. I'm leaning towards the cable being bad...That or, something broken on the PCB is messing up the ADB controller in my Quadra 630.