Comcast connectivity issues with a CM1150V

For 2 years system has worked without issues this past weekend, Comcast had an outage in the area repaired it in about three hours and all was welll except not.  started getting consistent disconnects but Comcast won't look at the on board info because it isn't their gear.. when I finally get them. I am up and running with no issue until  the next one??? what to do????