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Originally Posted by amateurrobotguy
The problem was a bad OI. Ports 1 and 3 don't work but 3 and 4 did. We just got last years board hooked up.
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Check the Disable switch bank on the bottom of the OI.. I suspect someone was playing with the switches, which would cause exactly what you are talking about.
They should all be in the same position, but I'm not sure which way.