Troubleshooting
11
Problem
Probable cause(s)
Remedy
No power to panel.
Fuse blown
Defective PSU
(power supply unit).
Check power and
connections.
Disconnect panel from power. Contact
professional person for service.
Disconnect panel from power.Contact
Professional personfor service.
Panel is completely
dead.
One or more panels
displays video
incorrectly or does
not display video at all.
Incorrect panel settings
on control .system
Fault on line connection
Panel defective.
Other device (e.g. Ethernet switch)
on line connection defective.
Check settings (display addresses,
panel DeviceProperties, etc.).
Inspect connections and cables. Correct
poor connections. Repair or replace
damaged cables.
Have faulty panel serviced by
service technician.
Replace with a device known to be
operating correctly. Have faultydevice
tested and serviced.
Display cuts out
intermittently.
Panel is too hot.
Fault on line connection
Device on line connection
All panels and/or
monitor screen display
video incorrectly or do
not display video at all.
Incorrect video input or panel
settings on System Controller.
Unusable video signal or
defective video source.
Fault on line connection.
Device on line connection
Check settings (PAL/SECAM/
NTSC selection, overall panel
intensity setting, etc.)
Check video source
Inspect connections and cables. Correct
poor connections. Repair or replace
damaged cables.
Have faulty panel or device tested and
serviced by service technician or
supplier.
Ensure free airflow around spine.
Check that ambient temperature does
not exceed max. permitted level.
Contact professional person for service.
Inspect connections and cables.
Correct poor connections. Repair
or replace damaged cables.
Have faulty panel or device tested and
serviced by service technician or supplier.
Check module.
Replace LED module, contact the
manufacturer
One LED module
cuts out.
LED module incorrectly
installed and connected.
LED module faulty.
