insideabox

So I had my car in storage for about 6 months at A1...they start the car, charge the battery and check tire pressure ever month and that's it. I picked it up and didn't realize the radio wasn't working, but when I did I asked them about it and of course they had no idea about it and claim it must have been like that already, whatever I thought, probably not a big deal. This was like 2 months ago everything else is fine with car, and I didn't really mind the no radio thing but I recently decided to try and fix it, changed the 15A Audio fuse and that didn't work so I'm here to see if anyone has any ideas? Maybe it's the other fuse listed as audio/mirror or the amp fuse? I looked at all those as well but they didn't look blown, but neither did the 15A that I changed.

Thinking about just upgrading the radio anyway but I like to fix things so I would like to fix this first lol but I'm not experienced in electrical stuff past tapping wires.