I recently acquired a used DW8000 I've been trying to fix up. The synth powers up, and I am able to switch between patches, alter parameters, etc., but it doesn't output any sound, via either the headphone or line level outputs. I thought perhaps this could be an issue with the internal coincell battery, however I just replaced it, and the issue remains. I've tried reloading the factory patches, but to no avail. The rear switches for tape input, etc. seem to be in the correct places. The keyboard mechanism seems to be okay, because I can control an external synth from the DW8000s MIDI output port.
Has anyone else run into this issue and / or can suggest a possible solution?