Had the thing mounted in my truck for 6 months. Took it out to sell the truck. It sat in the garage for month or 2. Went to use the radio and it wouldn't turn on. I'm thinking this problem started before I removed it from the truck. But I don't know how or why. I took the outer case off thinking there might be a fuse inside but didn't see one. Took a look at the board and nothing looks out of place. All the solder looks good. So I'm thinking it might be the switch. But I don't know much about this sort of thing so...