Radio

What is your question?

My car went to the shop with a working radio. Now it isn't working. I assume it's a fuse and nothing they actually did and want to attempt to fix it myself but I can only find one fuse box and it isn't labeled in any way. I purchased this used and it didn't come with a manual. Does anyone know where the fuse boxes are and which ones I should check. I read somewhere #9 and #11 but like I said my one box I can find isn't labeled.