Saw this on the Comcast forums:quote:On Wednesday, September 28, 2016 at 2:20 p.m. (Eastern Standard Time), The Federal Emergency Management Agency (FEMA), in coordination with the Federal Communications Commission (FCC), will conduct a mandatory nationwide test of the Emergency Alert System (EAS).
The nationwide test is required for all broadcast, cable and satellite companies and is intended to allow the FCC and FEMA to determine how well the nationwide EAS works and what, if any, improvements may be necessary. The test will last approximately one minute.
During the test all programming will be interrupted, you will not be able to change the channel and the EAS test message will display on the screen.
At the end of the EAS test all services will return to normal.
If your regular programming does not resume as normal, please unplug the power from the TV box for 20 seconds and then plug it back in. If this does not resolve the issue, please chat with us online for assistance, or call us at 1-800-Comcast.http://forums.xfinity.com/t5/Channels-and-Programming/Emergency-Alert-System-Nationwide-Test-EAS/m-p/2803063
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