https://helpforum.sky.com/t5/Sky-Q/Noise-and-interference-on-tv/m-p/4519850#M622232 <P>Was the new hdmi cable certified for 4k? It could be a faulty box but also looks like classic cable fault symptoms.</P> Wed, 27 Dec 2023 18:42:23 GMT Chodley 2023-12-27T18:42:23Z https://helpforum.sky.com/t5/Sky-Q/Noise-and-interference-on-tv/m-p/4519844#M622229 <P>When I switch the tv on, for about an hour, I get a screech for a bout 1 second, sometimes the picture goes black or the lower quarter is fuzzy, again only for about 1 second. I swapped the hdmi cable to a different port, I have swapped the hdmi cable but still it persisted. I unplugged sky from the tv , watching via an aerial and there is no fault, I believe the fault is with the sky q box. What can be done ?</P> Wed, 27 Dec 2023 18:34:46 GMT https://helpforum.sky.com/t5/Sky-Q/Noise-and-interference-on-tv/m-p/4519844#M622229 Joe+999 2023-12-27T18:34:46Z https://helpforum.sky.com/t5/Sky-Q/Noise-and-interference-on-tv/m-p/4519850#M622232 <P>Was the new hdmi cable certified for 4k? It could be a faulty box but also looks like classic cable fault symptoms.</P> Wed, 27 Dec 2023 18:42:23 GMT https://helpforum.sky.com/t5/Sky-Q/Noise-and-interference-on-tv/m-p/4519850#M622232 Chodley 2023-12-27T18:42:23Z