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Discussion Starter · #1 ·
I am a Spectrum subscriber in Round Rock, TX with TiVo Roamio Pros running 20.7.4b.RC3-840-6-840 with a tuning adapter and multi-stream CableCARD.

Lately some channels are not staying tuned after initially successfully tuning. Specifically, I can change to the channel and the picture and sound will show correctly for about 3 seconds, but then the following message is shown

This channel is temporarily unavailable.
Press SELECT to try tuning to this channel again.
Contact your cable provider for more information.​

If I press select, the tuner will tune correctly and show the video/audio for another 3 seconds before showing the message again.

If I power cycle the tuning adapter, things will work correctly for a short period of time (I think measured in minutes and not hours, but I do not know for sure exactly).

This only happens on one of my 2 TiVos.

The channels that fail are "lesser" channels, so I thought perhaps it was an SDV issue, but I know that some of the failing channels are ones that would show up without the tuning adapter connected (e.g. HBO on 511).

I have captured the diagnostics for a working channel (7) and a fialing channel (125) (any typos are mine):

Tuner: 0
Channel: 7
Frequency: 141000 KHz
Moduleation: QAM 256
Program Number: 1
Signal Source: Cable
Connector Type: RF 2
Channel Bits: 2250778
CableCARD Association: CableCARD 1
Signal Strength: 100%
Signal Lock: Yes
Program Lock: Yes
Search Complete: Yes
SNR: 41 dB
RS Uncorrected: 0
RS Corrected: 0
RC State: Available
Current Tuning Status: Tuned: Success
Tune State: In Progress
Last Used Channel Plan: Undefined
CCI Byte: 0x00
Time Since Tune Start: 295 seconds
Time Since Singal Lock: 295 seconds
PCR PID: 0x65
Video PID: 0x65 (MPEG2)
Available Audio PIDs: 0x66 (AC3), 0x1E3 (AC3)
Last SElected Audio PID: 0x66 (AC3)
Resolution Status: Success
Resolution Time: 10/18/2020 13:20:28
TA/SDV Message: -
TA/SDV Time: -
Pending Tune STatus: No tune pending

Tuner: 1
Channel: 125
Frequency: 651000 KHz
Moduleation: QAM 256
Program Number: 0
Signal Source: Cable
Connector Type: RF 2
Channel Bits: 2250778
CableCARD Association: CableCARD 1
Signal Strength: 98%
Signal Lock: Yes
Program Lock: Yes
Search Complete: Yes
SNR: 39 dB
RS Uncorrected: 0
RS Corrected: 0
RC State: Available
Current Tuning Status: Tuned: Success
Tune State: In Progress
Last Used Channel Plan: Undefined
CCI Byte: N/A
Time Since Tune Start: 295 seconds
Time Since Singal Lock: 295 seconds
PCR PID: -`
Video PID: -`
Available Audio PIDs: -`
Last SElected Audio PID: -`
Resolution Status: Response Pending (Ignoring MC)
Resolution Time: 10/18/2020 13:20:28
TA/SDV Message: -
TA/SDV Time: -
Pending Tune STatus: No tune pending​

How do I go about determining if this is a TiVo issue or a CableCARD or tuning adapter issue?
 
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