If you have please contact me I can help.I have been repairing diver com equipment for 3 years now due to the fact that there is a great  need for it.To many of you have been led to believe that most radios and com boxes cannot be or the cost is to high to have them repaired.Here is a link to a sample of my work.http://longstreath.com/fileuploads/diver_radio_slide.pdf  Thank you and I hope I can help.Jeff