Mice not recognized

[Matt_H]

Hopefully one of the CIAs didn't get damaged... that will be a very frustrating repair.

There's a chance it could just be the keylock. Did it accidentally get set to the locked position? Or maybe the connector is plugged into the motherboard backwards? Check some photos online to see what is correct.

The Quikpaks were 4000Ts, weren't they? In that case maybe the cables to the ports module are not installed correctly?

I hope some of this helps and you're able to solve the problem!

[Matt_H]

Not sure why the subject of bad CIAs always seem to arise on the subject of mouse movement issues, these have nothing to do with reading mouse quadrature data in any Amiga model.  Worst case, you might have a faulty shift register U541 on the A4000T main board.

Edit: Just remembered this old thread where I'd discussed the same issues.  Wow, I noticed I had a "not the CIA" rant there too, I'm obviously becoming cynical.

Hmmm, I'll take responsibility for this one. Back in the day I seem to remember the US magazines and my local repair shop always talking about mice and blown CIAs. As in hotplugging/unplugging mice could blow a CIA and then the mouse port wouldn't work... Maybe  not?