I have a IIgs that's failing diagnostics with System Bad: 0C000001 error. In addition, it often starts up with strange screeches and displays "unclaimed sound interrupt" when this happens.
My first thought is to socket and change the 4464 sound RAM, but I noticed a lot of bodges including cut traces on the underside of the board around that area. Is this normal? I can't find any photos of the underside of a ROM0/ROM1 board to confirm if these are factory, meant to address an issue or are causing the issue.
My first thought is to socket and change the 4464 sound RAM, but I noticed a lot of bodges including cut traces on the underside of the board around that area. Is this normal? I can't find any photos of the underside of a ROM0/ROM1 board to confirm if these are factory, meant to address an issue or are causing the issue.