None of the fuses in a 106 are spec'd as slow blow in the service manual... Which fuse number is it? The two fuses for the analog supply (F2 & F3) are 500mA, they are for the +/- 15 volt supply. Can you clarify if it is the mains fuse that is failing or a secondary fuse? If is F2 or F3, try disconn...

Stab Frenzy wrote:Could just be that old fuses blow eventually, especially if the synth gets moved around a bit. Replace the fuse with one the same rating and it'll probably be fine, if it blows again you know you've got a problem.

Already did. It reliably blows fuses.

I have a Juno-106 that blew the 500mA slow-blow fuse after leaving it on overnight. Could this be because of one of the voice modules? I thought that if a module blew, the synth would just have a voice gone, essentially making it a 5-polyphony synth. Or would it?