Hi, can any help with the following:

This morning my 2007 S/C RRS started up perfectly without dash errors, however the Radio and Sat Nav didn't turn on. I pushed the volume knob on the radio which resulted in it turning on and then off within 3 seconds. After the radio turned off the Sat Nav screen turned on and off within 3 seconds too.

No obvious faults via IID and new battery installed this afternoon. Car is equipped with the Logic 7 amp.