Daktronics BA-1518, Display Manual, Page: 81 / 204

4. Follow these steps in reverse order to install a new power supply.
Weatherstripping
To ensure that the display is waterproof, weatherstripping has been installed around the entire
display and around each module. It is important that the weatherstripping is attached properly at
all times, or water may leak into the display and damage the components.
TNMC Display Maintenance
Complete a yearly inspection to maintain safe and dependable display operation. This inspection
should address the following issues:
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Loose Hardware
Verify that fasteners, such as bolts and rivets, have not come loose. Check and tighten or
replace fasteners as required.
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Excessive Dust Buildup
Occasionally, it may be necessary to vacuum the inside of the display cabinet to remove
dust/dirt buildup that may interfere with airflow.
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Water Intrusion – Water stain marks
Water can enter the display where weatherstripping has come loose or deteriorated;
where fasteners have come loose, allowing gaps in the panels; or where moisture may be
entering around hardware. Check electronic components for corrosion.
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Corrosion
Check the paint, and look for possible corrosion, especially at footings, structural tie
points, and ground rods and other types of grounding electrodes.
Note: If you notice any of the preceding conditions, make repairs or take corrective action
immediately.
Troubleshooting
This subsection contains some symptoms that may be encountered in the displays. This list does
not include every possible symptom, but does represent common situations that may occur.
Symptom/Condition Possible Cause/Remedy
One or more LEDs on a single
module fails to light.
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Check/replace the ribbon cables on the
module.
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Replace the module.
One or more LEDs on a single
module fails to turn off.
ƒ
Check/replace the ribbon cables on
module.
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Replace the module.
A section of the display is not
working; the section extends all the
way to the right side of the display.
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Replace the first module/driver on the left
side of the first module that is not working.
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Replace the second module that is not
TNMC Maintenance 9-9