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I hooked up my cable box and had the "to be announced" banner where the show information would normally be and after activating the equipment online, the screen went black and the data light has been flashing ever since. Box turns on but nothing shows on the screen. Unplugged it for 1 minute after about 2 hours and then plugged it in with no change. Just a black screen with the data light flashing, no menus or anything. Checked all my connections. The coax cable is running from a splitter that the modem is also attached to. Internet is working fine.
Thanks for the help.
Sometimes "Activating" on line can fail. In those cases I call the Comcast number supplied with your "self install" kit. They will most likely ask to to unplug the box about 2 minutes and plug it back in to reset the box. They will resend the signal and wait on their end until you get restarted correctly, or help out if needed.
THANK YOU! I had the black screen, but menus and external VCR all worked, only the cable input was "disabled" (black screen on all channels). Guide had "To be announced", but got populated, but NO VIDEO from cable. I disconnected the AC power and cable from the box for over a minute, hooked both up, and after a short initialization, the cable box power went off. It turned it back on, and it was WORKING! The guide just has to repopulate, but that's ok.
From John Nozum, a recipient of a new cable box as of 09/04/2019