Recent street upgrade/maintenance resulting in random X1 video pixelization

The xfinity service in my area was recently upgraded/maintained according to the outages I experienced and email notifications i received.  Now that the work has been completed, I've noticed several of my TVs are now experiencing random, momentary pixelization.  This was not an issue prior to the street maintenance.  I've checked that all the cables are properly installed, power cycled all the equipment.  What else can I try?