I just went to the Xfinity store yesterday to replace the old box I thought was the issue. Worked for a few hours and now the same signal issue of flickering to black screen. My upstairs main box has no problems. It’s my bedroom 4K small box that has the issue. It’s not the TV, apps are fine. It’s everything on the Xfininty small 4K box. Any suggestions?
adding... when you insert the HDMI ends feel and hear the lock-in "CLICK". are you pressing hard enough to fully set the connectors?
I am not a Comcast Employee. I am a Customer Expert volunteering my time to help other customers here in the Forums. We ask that you post publicly so people with similar questions may benefit from the conversation. Was your question answered? Mark the post as Best Answer!