Black screen of death continued:
The use of the mini box as a substitute for the Silver box ended in failure on Saturday morning when the black screen returned.
Has one last attempt at trying to fix the issue by removing all other inputs from the TV (Blu-ray, Amazon, Soundbar). Still no change! Having tried each HDMI input apart from the one supporting ARC decided to try that one and no more black screen.
Been fine for two days now. Given that I've probably spent around ten hours trying to get this resolved I'll leave cancelling the engineer callout for a few more days just to make sure it remains fine.
Does anyone one know whether the software reset option one on the hidden menu clears down any satellite dish settings?