Vintage Synth Repair

Hi everyone,

Recently my Odyssey has begun experiencing Oscillator drift. It's related to the LFO. Even when LFO modulation is set to minimum, there is still a small amount of modulation making it impossible to play notes at a stable pitch. When I speed up the LFO the modulation speeds up accordingly, although the Oscillator LFO modulation sliders are set to zero. This means I can't get a stable pitch out of it, and this affects both oscillators. It's only slight but enough to make it unusable as a musical instrument.

Anyone got any ideas for a fix? I'm hoping it's nothing too serious.

thanks,
Ian