Infotainment switches from radio to AUX

The Infotainment system in my '64 Octavia has suddenly started switching from DAB to FM then to AM then from radio to AUX.  Could this be associated with the current very hot weather and high pressure?

Also the Bluetooth connection to my HTC phone has been lost a couple of times recently - could this be anything to do with the above i.e. if the above isn't atmospherics could a failing Infotainment radio component affect the Bluetooth?

Thanks

Edited 9 July, 20188 yr by Marnhullman
added a word