On the one not receiving is there any meter indication of reception? If there is an indication then the suggestion above may well work. An additional issue is the volume control possibly kaput. If no indication of reception on the meter. Check all the switches and antenna connections.
I went to Radio Shack and bought an SWR Meter (or you could borrow one. This Meter will help check the Coax, Antenna and Connections.
have Coach will Travel
Steve & Tricia
1982 Newell 38' (built before #1) 6V92 DD, 5 Speed Allison, 12.5 KW Kohler, Couch used to make into a Bed but I fixed it! https://newellshowcase.com/thumbnails.php?album=214
2007 Yukon, 1981 CJ7 Laredo, 2002 Honda CRV, 1955 Thunderbird, 1952 Pontiac Sedan Delivery, 1952 Ford 8N, 1958 Airstream, 1959 Glasspar 16' Avalon, Cabin in the Woods........what will I work on next