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This is most likely a signal problem. If connectors seem secure, cables in good condition, and splitters in spec, it would be best to call Comcast to arrange a tech visit.
My picture keeps sporadically going out. It makes a loud static sounds and the screen goes black. This lasts about 10 seconds and then the picture comes back. There is no error message just black screen.
Use this tool to find the codes of your devices and to get specific instructions on programming the codes into your Comcast remote.
Alerts are an easy, quick way to manage your account and get information - like payment confirmations and your current balance.
Find everything you need to know about setting up your wireless gateway.
Get details on weather, traffic, sports and more all from your XFINITY TV on the X1 Platform Dashboard.