hi
check the resonator ceramic x2 1.6mhz
check if the gate array is alimented (ic30)
check the gate array dont have a bad solder
check ic 12 ic 11 and check if the trigger enable the signal !
good luck!

--- In tr-707@yahoogroups.com , "overachiever5" <overachiever5@...> wrote:
>
> I have a TR707 tha tI have not used in 10 years. Dust free. powers up
> and all displays work but no sound. tried everything even tried to
> trigger the voices via MIDI from my keyboard and nothing. volume
> sliders don't even hiss when moved. total silence. all other
> functions seem to be OK, it enters all modes. I made sure it was on
> internal clock, tried individual outputs, NOTHING. any suggestions
>