So i already had my flip down monitor installed and today i got a new amp and installed it in while removing the battery terminal to hook up the ground for the amp. I got couple of sparks on the initial contact before screwing it down. Went to go turn my flip down lcd and it wont come on. I think i short it out by blowing a fuse, but i dont remeber seeing any fuse in the lcd? Is my lcd dead or is there always a fuse some where internally?