I have repaired a number of Bernina 930 circuit boards (in the UK) There is a common fault. It seems Bernina fitted one component of poor quality which blows after some time.. probably most machines will suffer this - in time.
When this component blows, specific 'capacitors' and other adjacent components commonly fail (UK 230V machines) causing the machine to be 'dead'
Do Not Despair. Find an electronic engineer who cares enough to spend time on the PCB. You don't necessarily need a sewing machine expert.
Is this fault common on 115V machines in the USA???
I agree with Mickey2. The 930 is the last of the Rolls Royce mechanical machines. Beautiful, quiet, strong etc

I have a Bernina 930 electronic which is not working, the motor & speed control are working but the led's don't light up and the presser foot does not come all the way down. I emailed a firm in Manchester (UK)who specialise in Bernina repairs but they didn't reply so I assume they're not interested. If any one can give me some guidance on the problem and a source of parts It would be greatly appreciated as the machine is far too nice to scrap.