It looks like my 'enter' button is not working. When I took the remove apart and pressed the button I could see a hidden green led turn on when I pressed the button indicating that the button is working. However, the ampliefier does not respond when the button is pressed so I am unable to enter the 'Manual Setup', 'Signal' or 'Auto Setup' menus alas I cannot configure my amp now. I have tried resetting the amp to factory and replacing the batteries to no avail. If I could see a way to operate the amp and go through these menus using the amp itself then I would. Any suggestions?