Temporarily off air
At least 50 of my channels show "Temporarily off air" for the last four months. They didn't go off at the same time, but a few at a time over a period of a few weeks. Some went off for a couple days and then came back, only to go off air permanently later. I have the Starter service plan. Only channel 8, 17, 42, and 1008, a few local government stations, all pay per view channels, and a few shopping channels have clear video programming. All major network channels and music choice channels 1914-1950 are off the air. I have no splitters. My box is connected with a single new cable to the Cox cable on the outside of the house with a new coupler. The box has been restarted by me several times, by two technicians over the phone, and by the Cox automated troubleshooting system on the phone. the last technician today couldn't solve the problem. he also couldn't answer my question "What is the origin of the message 'Temporarily off air'?" I suspect that this message is generated by the box because if there is no signal coming through the cable, there would be no message either, unless it's generated by the box. ColleenD seems to have answered this question in her comments on 19 Feb 2013 11:54 PM, but she didn't exactly say that. She just compared it to the check engine light on a car - "When a box gives the message "Temporarily off air" or "unavailable" the box isn't receiving signal for that particular channel(s). It's a generic message similar to the "Check engine" light coming on in your car. The car can't tell you why the light is on without the help of a mechanic having hands on access to your vehicle and taking computer readings. " So, Colleen, does the message originate in the box, such as in read only memory? What about the message on channels that I need to subscribe to, or are in a higher level plan than I have "Call customer service to subscribe to this service"? If it originates in the box, it makes sense that the digital TV signal is below the threshold in the cable, or the input amplifier in the box is malfunctioning. There isn't anything wrong with my cable connections. I don't have analog TV, I have all digital. The signals come from the Cox servers and multiplexors. Why would some digital signals be strong and others weak on the same cable? As an electronic engineer, that doesn't make sense to me, but maybe it's correct. Anyway, it seems more like the input amplifier or some demultiplexer inside the box. So, I will try replacing that before calling a technician.