For the past few days a couple of the channels on 117 MHz are dropping out; NHK and KCRB. e.g. channels 22, 201, and 817. I get code 227 on my DTAs and my X1 box just says there is a video problem. Interestingly, if I check these channels on the Xfinity Stream they are also not present there either. Clearly there is an upstream issue!
Also, channel 717 (also on 117 MHz) with the recent switch to KPJK (formerly KCSM) has intermittently pixelation that seems to be like an encoding problem not a signal strength problem. Some days it's been fine, then the next day it starts showing pixelation during fast scene changes and camera panning.
Please check these issues upstream. Thanks!