- Have you power cycled the display?
- Check all connections and securely screw down if not corroded
- Turn power off
- On the power control module identify the cable for a sign with issue and swap cables with any other to see if issue follows malfunctioning display or stays at same location.
If issue is not solved give us a call at 800-675-0123 or e-mail us at support.numeritexdisplays.zendesk.com