E30 Zone

Hi,
I have a Blaupunkt BMW Bavaria CII casstte/ radio which has a loose on/off/volume control that needs replacing does anyone here have any experience of reliable electronics repair facilities?
Thanks, Jake

Could you not use soft paper to reduce the circumference of the button fitting which would tighten the grab to the radio control and maybe super glue to hold it in place. If the radio works then it is not an electronics problem. Maybe it is not that type of button.