Within the last week my Humax BT YouView DTRT-2100 displays a black screen for around 63 seconds when switching on (from standby) or changing channel.
I have tried restarting and fully powering down, with no change. Not yet tried a factory reset, so as not to lose recordings.
Perhaps the consistent 1 minute time period points to a timed process failing, triggered when I switch channel.
Any ideas would be appreciated.