usually 2 fuses on radio wiring,one permanent live for keeping memory, and one for accessory and ignition positions.and i think one is plugged direct in back of radio near wire connectors.as cdc - radio will need removing.
k
July 2013
If as you say the fuse behind the battery is ok then the radio might have to be removed,not sure but there may be a fuse on the back panel,it may be the case the unit itself is at fault.
cdc
June 2013
Automatic Answer
We may have found other answers which could help you.