Random Loss of Video Signal

#1
Had the Foxsat HDR since April and been running the custom firmware with no issues. However intermittently the video output signal (HDMI) will cut out and leave the TV viewing the white noise / thosands of dots - sorry I do not know the technical term for the no signal screen.

Could this be the TV?
Could this be the HDMI cable?

It occurs usually over the weekend or once every few weeks.

Any help greatly appreciated.
 
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