Join Att Customer Service when TV screen goes black 1-855-436-9666 - 0 views
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crishgayle01 on 17 May 19You need to unplug the power cable from the digital box, also, you need to wait for approx 30 seconds, then plug it again. Wait till the box is fully restarted, then see if the image is back. If that does not fix it, then join Att Customer Service. If you have the HDMI cable then you should connect to your TV, then you can try HDMI handshake. 1-855-436-9666 http://att.customer-servicephonenumber.com/