Amiga 4000 problem!!

[Madgun68]

I think there was a thread on here a while ago about audio capacitors on the 4000 mainboard blowing up. If these were on the brink, maybe plugging in the speakers while the system was on was too much for them? Try checking those.

I doubt it's the caps on the audio circuit. I had one go out, and the only thing that happened was that I lost one of the audio channels.

[Madgun68]

Hard one to diagnose. You know about the color sequence so I'd suggest sticking with that.

Somehow, it seems more like coincidence that the machine died when plugging in the speakers. (Although, it having one of those PC speaker connections, I'm not sure if an Amiga would have any issues with the speaker outs being shorted, which is a possibility with those plugs.) I'd make sure the connector hack is good. Then go for reseating stuff (including the cpu card.)