I would at a minimum swap it with a known good mod (maybe the one next to it and see if it can be recreated. You can always swap it right back, you are only messing with 2 channels. But this is a must fix from what it sounds like if it is being transmitted out that way and can be just as easily seen on the cust set(s).
Dogs aren't our whole life, but they make our lives whole.
This is CABL.com posting #322457. Tiny Link: cabl.co/mbv25