[VA] Temporarily Unavailable
Fairfax Cox TV - multiple channels but not all - black screen across multiple cable box reboots, some channels just black, others eventually show a message similar to XYZ channel Temporarily Unavailable Please Check Later or similar. No status message saying "Cox Mea Culpa". This has been the case for a couple days at least. Just retried calling Cox Support - long wait for answer so hung up.
If you have an amp with a power supply inside, check and make sure that the power supply is plugged and and has power. My wife accidentally unplugged ours and that was the symptom.