New q box fitted yesterday now tv screen goes black intermittently,

[Nigewills]

Had this issue with first box 5 years ago apparently box wasn't compatible with lg tv had a different box all ok until new box fitted yesterday 

[oldfella]

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@Nigewills wrote:

Had this issue with first box 5 years ago apparently box wasn't compatible with lg tv had a different box all ok until new box fitted yesterday 

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Hi @Nigewills 

How long is your HDMI lead?

Also do you have another one to try?

If you are using UltraHD it needs to be a high speed HDMI cable.

[Nigewills]

All fixed, ithink, softwear needed updating on box. Would have thought the fitter would have checked it when fitting.