Having ongoing issues with a duplex TXR5. EBCOM boards keep going bad. Unit/units get stuck in a never ending boot loop with

"Dead Task pc000141D8 sr26"

Between the 2 units this is the 4th board that has gone bad within the past 10 months. This most recent one was just replaced a few weeks ago and is seemingly bad again. Both cars have the red "Error" LED lit with the master having a solid green "COMM" LED on, and the slave car with a blinking yellow "COMM" LED. When the EBCOM board has gone bad on the master car, both units shutdown, and when the EBCOM board goes bad on the slave unit, only the slave unit shuts down. On the only other TXR5 duplex that I have on my route I had one go bad there as well, but the problem has not shown back up.

What could possibly be the reason for these boards going bad? Ive double checked connections, terminals, wiring, and the ID switches.