I have a 12 plate Superb estate with a Columbus head unit.
It is powering off and on intermittently accompanied by a thump through the speakers like you get if you power off an amplifier at the wall. It is not in a reboot cycle described in other threads. When it goes off it is completely powerless and the display on the dash does not show the audio components. It happens when the car is stationary and even when I open the door to get in.
I have checked the fuse and that is ok. As yet I haven't removed the unit to see if there is a connection problem.
Does anyone know if there is a relay for the radio?
Are there any threads where people have had the same problem. All the ones I have seen are about the firmware because the unit is in a reboot cycle not what I am experiencing.