Cancel that.

It's still a bodge job, with the new cap soldered to the old lead, and I'd still like to get the old cap out properly, but the lack of floppy function turned out to be a loose floppy cable [:I] ]'> (was *sure* I'd checked for such a basic thing before posting!).

Raises another question though - is the SE/30 a multi-layered PCB? Does fiddling with through hole components risk trashing the board if there are internal layer connections to get wrecked?

*Whew*