1. A Ribbon Cable may be loose or bad.
Take the cable out of the module and reseat it to test for a loose connection.
To test for a bad Ribbon Cable, swap it out with another Ribbon Cable that is working on the sign. If the panel starts working, then the previous cable is bad. Contact DCI for a replacement.
2. The panel itself might be bad. If after swapping the Ribbon Cables the panel continues to display errors, then Contact DCI to inquire about a replacement panel.
*DCI will require that a picture be taken of the area with the problem. This is to better assist us in solving the issue at hand.