David, If the unit is still under warranty have the dealer deal with it. If not trash it and find a replacement. My friend at work has been through 6 Concertone units and finally thinks he has one that works. He's keeping his fingers crossed. Others here have replaced them with name brand units that will fit the spot and are reliable.
Also, I wouldn't be putting my phone number on the Internet in what is really a public forum, you run the possibility of having a lot of trouble doing that. If you want to send a private message to a member and include it that is a much better idea, but don't make it public. It's far to easy for crooks to get your information, don't make it easier for them.
Hope you find a solution to the problem. Good luck.