Problem with the main audio output, potentiometer volume

Hello, first sorry for my English …

I have a problem with the main audio output from my Machinedrum.

Sometimes the right channel of the main output does not listen, and if I move the volume potentiometer, listen again.

I think it is the potentiometer volume should be changed.

Does anyone has this happened?

I have read in some places you can buy potentiometer and encoders on the website of Elektron, and so to change it yourself.

Does anyone has changed the volume potentiometer your Machinedrum?

Thank you very much,
Greetings.