Whats worth fixing? have you determined what is working and what is broken? The mouse or the mouse port?
First strip all cards and attempt booting off floppy to see if mouse works.
Mouse related items to check:
- Paula, Denise.
- 8520s
- 74LS157
- EMI 1401 5.1 ohm Res
troubleshoot in this order.
without working/tested spare pare its impossible to pinpoint. :-P
