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.
