Problem appears to be in the foot pedal, won't shut off

I have a similar problem on my wife's Bernina Minimatic which keeps on running when it is plugged it in. My electronics knowledge is not too bad but I'm not an expert; I already tried to disconnect the capacitor (with the 4 wires) located at the motor, but it is still doing the same. So I think the problem is maybe also within the pedal. It is continiously running at the low speed and when you push the pedal it runs faster. When you release the pedal it is returning to the low speed again. But it keeps on running. In the pedal there is a only a few electronical components 2 x capacitors, diodes, resistors and one transistor and the circuit seems quite simple. Do wou think it will be the same situation? I have a similar problem on my wife's Bernina Minimatic which keeps on running when it is plugged it in. My electronics knowledge is not too bad but I'm not an expert; I already tried to disconnect the capacitor (with the 4 wires) located at the motor, but it is still doing the same. So I think the problem is maybe also within the pedal. It is continiously running at the low speed and when you push the pedal it runs faster. When you release the pedal it is returning to the low speed again. But it keeps on running. In the pedal there is a only a few electronical components 2 x capacitors, diodes, resistors and one transistor and the circuit seems quite simple. Do wou think it will be the same situation?

The best way to make sure it is your foot control. Disconnect the foot control and see if your machine still runs. I'm not sure if you have a micro switch in that FC. Sometimes they get stuck and need some Q20 release oil. Could still be your capacitor on the foot control else you can set the pod lower.

Else you can fit a standard foot control if you only have two wires running into your FC. The once with 3 wires can also be fitted to a standard FC. You have to remove the correct wire.

Please take care doing electrical work and consult electrician if need be.

Hope that helps and i'll try give you some more advice The best way to make sure it is your foot control. Disconnect the foot control and see if your machine still runs. I'm not sure if you have a micro switch in that FC. Sometimes they get stuck and need some Q20 release oil. Could still be your capacitor on the foot control else you can set the pod lower. Else you can fit a standard foot control if you only have two wires running into your FC. The once with 3 wires can also be fitted to a standard FC. You have to remove the correct wire. Please take care doing electrical work and consult electrician if need be. Hope that helps and i'll try give you some more advice