Source mode issues

[Bronwen1]

When first switching on I often can't get connected and a message comes up unknown source mode. This has only happened since I received a new sky q box, I have done all the usual things over and over, sometimes 5 times before I can get a connection, ( switching off at mains) I have changed the connection wire after speaking to one of your advisors. This problem isn't going away, I am fed up with pretty much every other day haven't to switch off and on.

i need help with this.

[Chodley · Accepted solution]

Which replacement HDMI cable did you use?

Is the box set to output 2160p / 10bit ?

[Bronwen1]

I'm using the cable sky sent me, have no idea about the other thing.

[Chodley]

You said you'd tried another cable?

Check your video settings for the other question.

[Bronwen1]

Looked can't find anything. 

[Chodley]

Can't see the output resolution?

and the cable? Did Sky send a new one or something?

[Bronwen1]

I'm looking in settings at system info, is this the right place.

[Chodley]

 It's under Audio Visual

https://www.sky.com/help/articles/changing-the-screen-resolution-setting

[Bronwen1]

I've phoned sky hopefully what they have told me will help, thanks for yours.