I have a six year old Amana over the range microwave that the buttons on the control panel were slowly dying. The 'Start' button started to fail so I ordered a new control panel. After replacing the control planel now none of the buttons work. I have re-installed the old panel but still no buttons work. Is there a reset sequence that needs to be don to enable a new contorl panel? Or is it time to replace the control module or the entire microwave?

Thanks in advance!
Graham