We're using an antenna mounted in the attic, and KFOR Channel 4 in OKC has just stopped working on all TVs in the house. I get a WEAK SIGNAL/NO SIGNAL message. I disconnected one of the TV's and hooked it back up to a small indoor antenna and ran the channel set-up feature. Volia! KFOR Channel 4 comes in loud and clear using the little antenna. So do I need to crawl my old self up in the attic and fiddle with the big antenna that's up there in order to fix the issue or just switch to the little indoor antennas?