topic Black mark when changing channel in Sky Glass https://helpforum.sky.com/t5/Sky-Glass/Black-mark-when-changing-channel/m-p/5162982#M174819 <P>When ever I change a channel I get a black pixilated mark bottom left corner instead of just a plain black screen. Tried reboot and reset, been like it for a while, no other issues. &nbsp;</P> Tue, 09 Dec 2025 19:49:03 GMT Chris+Cowing 2025-12-09T19:49:03Z Black mark when changing channel https://helpforum.sky.com/t5/Sky-Glass/Black-mark-when-changing-channel/m-p/5162982#M174819 <P>When ever I change a channel I get a black pixilated mark bottom left corner instead of just a plain black screen. Tried reboot and reset, been like it for a while, no other issues. &nbsp;</P> Tue, 09 Dec 2025 19:49:03 GMT https://helpforum.sky.com/t5/Sky-Glass/Black-mark-when-changing-channel/m-p/5162982#M174819 Chris+Cowing 2025-12-09T19:49:03Z