Daktronics Outdoor LED Scoreboards Service Manual - Manual (Page 19)

Scoreboard Troubleshooting 13
2.7 Power Supplies
Scoreboards with 8-column drivers use a single 150 W power supply assembly, while 16-
column driver enclosures require a dual 150 W power supply assembly. Most scoreboards
with white digits will also have at least one 1000 W power supply in addition to, or in place of,
the power supplies in the driver enclosure. The 1000 W power supplies are located in a
separate enclosure. If a certain group of digits is not lighting up, the power supply they are all
connected to may need to be replaced.
Replacing a Power Supply
To remove a 150 W power supply:
1. Use the component location drawings attached to the product specification sheets
listed in Appendix A to locate the enclosure.
2. Open an access panel as described in Section 2.2.
3. Loosen the screws to remove metal cover from the enclosure.
4. Locate the power supply (Figure 10) and disconnect all wires connected to it.
5. Use a 9/32" nut driver to remove the hardware securing the power supply.
6. Fasten the new power supply in place and reconnect all wires.
To remove a 1000 W power supply:
1. Use the component location drawings in Appendix A to locate the enclosure.
Refer also to Drawing B-274431 in Appendix C for a detailed view of the enclosure
assembly.
2. Open an access panel as described in Section 2.2.
3. Loosen the screws to remove metal cover from the enclosure.
4. Remove the mounting plate secured to the enclosure, remove the circuit board
attached to the power supply, and detach the power supply from the mounting plate.
5. Attach the circuit board to the new power supply and secure both to the mounting plate.
Note: If replacing the 1000 W power supply (Daktronics part # A-1856R) does not
seem to resolve the problem, try replacing its circuit board (part # 0P-1337-2000).
This circuit board also contains individual fuses for each output jack. If a single digit
doesn’t work, a fuse may be blown. Replace the fuse(s) as needed with part # F-1058.
2.8 Radio Connections
To determine the settings for radio connections between the scoreboard and control console:
1. Power off any radio-equipped consoles in the area.
2. Cycle power to the scoreboard, and watch for the radio settings. These settings
appear in different locations based on the scoreboard layout:
 When using the All Sport 5000
controller, the scoreboard will display
“bX CY” where X is the Broadcast
group number and Y is the Channel
number. The default is b1C1.
o
If there is a clock, the settings
appear in the first four clock
digits (Figure 13).
Figure 13: All Sport Radio Settings (Clock)