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Old 12-03-2013, 10:34 AM   #1
chrison600
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Join Date: Oct 2013
Posts: 32
Show Not Recorded "No Signal"

Last night, three shows scheduled to record at 9PM, did not, all three with the message "No Signal". Another show at 9:30 showed the same status, so I looked back through more of the recording history and found what appear to be random shows not being recorded with the "No Signal" error.

I've also noticed that the tuner seems to "go to sleep" after not being used for a while. For example, I'll turn on the TV in the morning and there's nothing there. Toggling the channel up or down "wakes" the tuner and programming appears.

We've been listening to Pandora lately, but not as far back as some of the shows that claim to have not been recorded because of no signal.

Is there a reason that the signal would randomly drop?

Is there an "uptime" monitor where I can see when the signal is up or down?

Should I change a setting such that the tuner never "sleeps?"

This is a Roamio unit on Time Warner with a CableCard and a Cisco tuning adapter.

Thanks,

Chris
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Old 12-03-2013, 10:51 AM   #2
joanzen
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Location: Boynton Beach, FL
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Not sure if this is your issue, but there are several threads with people (including me) reporting situations where the TiVo cannot tune channels. This generally seems to be the result of old/buggy cable card firmware. See the threads below (and probably others) for more information.

http://www.tivocommunity.com/tivo-vb...d.php?t=511715
http://www.tivocommunity.com/tivo-vb...d.php?t=510784
http://www.tivocommunity.com/tivo-vb...d.php?t=511741
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Old 12-03-2013, 11:08 AM   #3
dlfl
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This kind of erratic tuning behavior is not unusual with tuning adapters. First the SDV system is allowed to drop a channel if it can deduce you aren't watching the channel. But more generally, the system is complex and involves sharing resources among subscribers. Implementation is often poor.

Next time you catch a tuning failure in the act, look at the tuned frequency in DVR diagnostics and in TA diagnostics. One of the common failure mechanisms, at least for older model Tivo's, is a blank screen and none of the TA frequencies matches the tuner frequency in DVR diagnostics. This has plagued Series 3 and Premieres for years. For this failure mode, usually just forcing a retune fixes it (which isn't a solution if the Tivo is trying to record the channel).
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Old 12-03-2013, 01:00 PM   #4
chrison600
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@joanzen

Thank you very much for those links. I think this might be an issue with my having 6 tuners active as well as the CC firmware. I'm in Central Texas on Time Warner. The "OS Ver" on my card is 1.5.3_F.p.0601.

Should I try to get a firmware upgrade?

Should I reduce tuners to 5 or 4?

Chris
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