Floofies said:

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?

Click to expand...