Hello ...maybe someone can help me!...Tore my headphone wire on Fisher 1280x...aquanaut....Can I replace this my self.....I can't figure out how to open it up.........seems like I have to go from the faceplate.......& wary about trying to unscrew plastic bolt on bottom........and lastly....anyone want to sell a set of ears for this unit...........Please don't say it has to go back to the factory.....lolol....Thanks Stan Wake Forest NC