Daktronics Outdoor LED Scoreboards Service Manual - Manual (Page 14)

8 Scoreboard Troubleshooting
2.4 Replacing Digit Segments
Digits that are 24" or larger are composed of seven
circuit board segments. As with smaller digits, the digit
segment circuit boards are mounted to the back of the
digit panel (Figure 8). Do not attempt to remove
individual LEDs; it may be possible to make repairs by
removing just the defective segment.
To replace a digit segment:
1. Open the digit panel as described in Section 2.2.
2. Disconnect the 2- or 4-pin power/signal
connectors from the back of the digit segment by
squeezing together the locking tabs and pulling
the connector free.
3. Use a 9 /
32
" nut driver to remove the nuts
securing the digit segment to the inside of the
panel, and then lift the digit segment off the
standoff studs.
4. Position a new digit segment over the studs,
making sure the rubber side of the rubber-
backed spacer is facing the digit circuit board.
Weather-sealed digit segments do not require
these spacers.
5. Tighten the nuts.
6. Reconnect the power/signal connector.
Note: This is a keyed connector and it will attach
in one way only. Do not attempt to force the
connection.
7. Close and secure the digit panel, then power up
and test the scoreboard to see if changing the
digit segment has resolved the problem.
Some LED digit segments are connected to a
breakout board (Figure 9). If all the segments of an
entire digit do not work, it may be necessary to
replace the breakout board instead. Breakout boards
are replaced in the same manner as a digit segment.
2.5 Replacing Colons, Decimals & Indicators
Colons, decimals, and other indicators are replaced in the same manner as a digit segment.
Some indicators will be connected to a breakout board (Figure 9). If no indicators work,
it may be necessary to replace the breakout board instead. Breakout boards are replaced in
the same manner as a digit segment.
Figure 8: Digit Segments & Panel
Figure 9: Breakout Board Enclosure
(Cover Removed)