u/Redbeard25

My Tivo with a Comcast cablecard is currently experiencing systemic 'RS Uncorrected' errors and V52 'No Signal' errors on all TV channels below 300MHz, while channels above 300MHz remain functional.

I have verified the following:

1. Network Architecture: My cable modem is currently operating in a sub-split upstream (36MHz) but is reporting an OFDMA upstream channel, indicating my area is in a transitional phase of a mid-split or high-split network upgrade that has not been finalized or fully provisioned.
2. Frequency-Specific Failure: With the Cablecard diagnostics on my Tivo, I can see that the channel failures are frequency-specific to the 100MHz–300MHz range, which is exactly where the new upstream path is likely being provisioned.
3. Physical Integrity: My internal cabling is sound; this is not a 'bad box' issue. The signal failure is persistent throughout the day and consistently worsens during periods of high network load, confirming this is a plant-side ingress issue caused by the ongoing split-architecture transition.

I have already had a box reset and run down the resets with a rep on chat.

Is there any way for you on the Xfinity side to confirm that this is the case? I would like to avoid having the technician come out if there's nothing they can do. I would also like to know my options since Comcast is not delivering what I'm paying for.

Please send me a ModMail as soon as possible.

Over the past week, about 2/3 of my Tivo channels have become garbled or just un-tuneable. When I go to DVR diagnostics, they're all channels with a frequency less than 300000 Khz.