I disconnected the speaker to check, issue remains on line out. Just now I even tried removing the amp from the analog board to see if that was feeding back somehow but no luck.
Hi folks,
I have a Performa 275 (ie Japanese Color Classic II) but I think it's actually an LC 550 motherboard inside, owing to the onboard VRAM being 512KB (I'm assuming this because I get "thousands of colors" with nothing in the extra VRAM slot).
Anyway, I turned the machine on this morning...