Thanks StanUbankit for your input. I have been troubleshooting this problem last couple of days. I have eight OTA channels scanned into two 722s and one 722k. Antenna is mounted in the attic, amplified, and sent out to the DVRs via a three way splitter. The OTA signal at the 722k location is two way split going to the DVR and a two way manual switch, then to the TV OTA port. All signal strengths on the two 722s are 100% on most channels and hi 90s on the other channels. The signal strength on the 722k channels are mostly hi 90s, one at 100% and two channels are hi 80s. So I don’t think signal strength is an issue.
Five of the OTA channel timer events I have set up are working OK. On the three other OTA timers, when the frequency is set to “All” or “New” the event schedules are missing or just have one event scheduled. All of the timers look good in the Timer listing. When the frequencies are changed to “Daily” or Weekly” everything looks good. Also the “Once” frequency works OK too. The three OTA channels that have the problem are CBS, NBC, and ABC. I am beginning to think the issue might be the TV Stations new and repeat signals they send out for the programs.
This problem started on 27 May 09 after having no problems for a year and nine months since I have had the 722s. Just installed the 722k on 31 May and it is having the same identical problem. I called Dish Tech support yesterday and went thru the normal resets, etc. She made a work ticket for further troubleshooting.
I hope there is a Dish Technician that follows this Forum that might have an idea of what might be the problem.