We've been running a Bolt for a couple of years as a cord cutter with an outdoor antenna, and it worked flawlessly until about 5 months ago. Suddenly we could not get a signal on Ch 7. Then a few weeks later we started getting significant noise on other channels in the higher VHF range, and eventually they became virtually unwatchable. We put a 10db amp on the antenna and it improved things slightly, but still had noise. We then tried connecting the Bolt cable directly to the TV set and it worked perfectly on all channels and we discovered several new channels. We had the same result with a second 2012 era TVV. We also ran the diagnostics on the tuners, and #2 does have a somewhat higher S/N ratio, but we can still watch the same channels on it as on the others. Has anyone else had this kind of problem?