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Large SNR drop on Tivo and modem

Regular Contributor

Large SNR drop on Tivo and modem

Some time today, the downstream signal strength and SNR dropped on my Tivo and modem.  The upstream power also increased.  

The modem signal strength is within spec (dropped from +4 to 0), but the SNR dropped from 43 to 35. The Tivo has it worse.   The signal strength there is 80% with a SNR of 31 (usually it's 40).   I saw a huge number of uncorrected errors last night, but currently it appears to be stable.  

At the moment, I'm not seeing any picture issues or speed problems on the modem, but something obviously changed for the worse.  I think a SNR of 30 is the lower limit for Tivo.   Comcast normally won't come out unless there's actually a picture or speed problem.  Any idea what to do here?

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Regular Contributor

Re: Large SNR drop on Tivo and modem

The SNR on channel 811 is 28.  The number of corrected errors on that channel is climbing steadily. 

Regular Contributor

Re: Large SNR drop on Tivo and modem

I've now lost channel 811 and the SNR is now 26.  Modem SNR is now 32. 

As such I called in and have a service appointment for tomorrow.