Green Dots on Screen only Sky

[DarrenHill]

I have Green dots appearing on screen, it's not all the time, comes and goes. 

Tried usual reset and changed hdmi lead no joy, becoming more frequent

I've attached a pic

 

[oldfella]

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@DarrenHill wrote:

I have Green dots appearing on screen, it's not all the time, comes and goes. 

Tried usual reset and changed hdmi lead no joy, becoming more frequent

I've attached a pic

 

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Hi @DarrenHill 

I had this issue a couple of years ago with a Q box.

Random dots and patterns and other artefacts and breakup on certain programs.   Only cured by replacing the Q box.