Daktronics AF-3400-133,171,216,260 - Manual (Page 35)

Maintenance and Troubleshooting
4-9
• Water Intrusion – Water Stain Marks
Water can enter the display where weather stripping has come loose or
deteriorated, where fasteners have come loose allowing gaps in the panels,
or where moisture may be entering around hardware. Be sure to check
around the lift eyes and bolts to ensure that water has not entered there. If
so, replace hardware immediately to prevent more water from entering the
display. Also, check electronic components for possible corrosion.
• Corrosion
Check the paint, and look for possible corrosion especially at footings,
structural tie points, and ground rods.
If any of the above conditions are noticed, action must be taken to correct the situation.
4.9 Troubleshooting
This sub-section 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 pixel fail
to light. • Replace/check the 2 pin connector on the
pixel.
• Replace the driver.
One or more LEDs on a single pixel fail
to turn off. • Replace/check 2 pin connectors on the pixel.
• Replace the driver.
A section of the display is not working. • Move/replace the driver on the module that is
not working.
• Replace the power supply assembly on the
first module that is not working.
• Replace the ribbon cable to the driver.
A group of modules, which share the
same power supply assembly, fail to
work.
• Check the wire connections at the power
supply.
• Replace the power supply assembly.