The most likely cause is a problem with the Input Module cable. Check the cable carefully, making certain that it is not damaged or excessively twisted. Additionally check the cable connectors to ensure that the contacts and connector shell are not damaged. If the connector is forced to mate upside-down, the shell will become damaged and protective fuses in the Main Amplifier will expire. In this case the cable will need replacement and the Bagnoli™ Main Amplifier will need to be returned to Delsys for repair. The bottom connector shows a deformed shell, indicated by the yellow arrows. This damage is attributed to a forced connection with upside-down orientation. Contrast this to the undamaged top connector shell.
Input Module Cable