Farfisa Compact / FAST 3 - repair help please

[johnny b3]

The internet seems to be devoid of all service literature except for money hungry re-sellers and I'm not quite at that point yet.

Have a dead Farfisa on the bench - you can hear the tone crosstalk/cyphers and vibrato effect faintly but that's it.

Would love to start with power supply voltages, right now i'm getting about 8vdc for both circuit board rails.

Can anyone supply such info please?

thanks!
adam

[eric appla]

I don't think it's much different to DUO. You get 9V to the oscillators. I take it if you check with oscilloscope all the generators are up and running and all the dividers provide signals for all notes. I'd trace it further past the filters to see where the signal disappears. Generally all organs of this kind are much the same with few little differences between