2001 ML 55 AMG. radio,cd and navigation just went dead while driving??? any ideas?

 

my radio on w203 c180 refused to power up, the radio has a front loader, the front loader still had power since it still ejected cd's. I Pulled fuse number 64 a 15amp fuse and checked if the cd operated it didn't so i replaced the fuse back, i then tried again and the cd frontloader power up, i then tried the radio and it also powered up, the radio is operating fine now.I think possibly the fuse was not contacting properly and the voltage across the fuse was high so there was enough power to power up the frontloader but not the radio. So check yor fuses. There will be a fuse manual in the vehicle.