Headunit replacement gone wrong.

[supacook2k]

I replaced my headunit a few days ago and no issues but had to take it back out earlier to connect the aerial as I originally didn't buy the adaptor. As I was taking the headunit out I saw a spark come from a cable behind. The headunit won't switch on so I checked the fuse and it's ok but also plugged the original Alana one back in and that won't turn on either. Checked fuse box in position f10 which I read is for the car audio and that appears fine. Can anyone suggest what the issue is and what I need to do in order to get it working again.

 

[supacook2k]

Problem solved, fuse f51 has blown but in the process I took the wrong one out and it fell down the back of a panel. RH dipped beam is out so need to buy a couple of fuses tomorrow