I have two PR60-83 relay boards. One I’d been using to test control software, so it had 24 working relays. The other had been a spare. I connected them to each other via the UXP port, which caused them to fail (oops). While the ethernet controllers respond properly to commands, none of the relay LEDs are lit, nor do the relays themselves actuate. What’s the most probable point of failure, and is it something that could be easily replaced?