48
TNMC Troubleshooting & Maintenance
– Model BA-2018
7.3 TNMC Troubleshooting Table
The table below lists potential problems with the display and indicates possible causes and
corrective actions. This list does not include every symptom that may be encountered, but it
does present several of the most common situations that may occur.
Many of the solutions offered below provide references to other sections within this manual
with further detail on how to fix the problem.
If a problem occurs that is not listed or that cannot be resolved using the solutions in the
following table, contact Daktronics using the information provided in
Section 5.13
Symptom/Condition
Possible Remedy
One or more LEDs on a single
module fails to light
Check/replace the ribbon cables on the module.
Replace the module. See
Section 7.7
One or more LEDs on a single
module fails to turn off
Check/replace the ribbon cables on module.
Replace the module.
See
Section 7.7
A section of the display not
working; section extends all the
way to the right side of the display
Check/replace the ribbon cables running to the first module
that is not working.
Replace the first module/driver on the left side of the first
module that is not working. See
Section 7.7
Replace the second module that is not working.
See
Section 7.7
Replace the power supply assembly of the first module that
is not working. See
Section 7.8
One row of modules does not work
or is garbled
Replace the first module. See
Section 7.7
Replace the TNMC driver. See
Section 7.6
A group of modules that share the
same power supply assembly fails
to work
Replace the power supply assembly.
See
Section 7.8
Entire display fails to work
Check for proper line voltage into the power termination
panel.
Check/replace the ribbon cable from the TNMC driver to the
modules.
Check the voltage settings on the power supplies.
Check/replace the signal cable to the driver.
Repair/replace the driver. See
Section 7.6
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