My 2014 SDV6 has developed an annoying fault whereby on occasion after a few minutes of listening to the Dab and/or using the sat nav, the screen suddenly goes off and the radio and sat nav immediately stop too.

You then hit the on/off/volume switch and once it sorts itself out, first the sat nav starts working again and then the DAB radio.

There is no set period before this happens and on some journeys everything works fine, on others it can be just a few minutes or more than half an hour before the screen stops.

Is there a simple fix?

Thanks