On Sun, 5 Feb 2017 20:53:44 -0800, "Newgene McMensa"
wrote:

Any ideas what could cause this, or hot to troubleshoot it?

Start by calling the TV station to see if they changed frequencies,
antenna locarion, or their power output.

Also make sure your anrenna did not rotate from winds or break from some
other weather conditions.

Swap that tv with the coax on the tv that DOES get that channel 2. (Bad
coax?)