Yes, as I told before, on two occasions it was not showing
the picture/screen because of the wrong Hz. It was set to
60 or 50 and the TV set could not work it.I does not need to be a resolution issue, but it could be also
the Hz thing.
Mate i dont know what you are on about with 60 and 50 hz which is refresh rates. Your TV should cope with both.
Furthermore your TV should cope with 480 720 and 1080p or i being interlaced.
You have a faulty HDMI and that is where it ends. You cant even get a recovery screen to show so forget about resolution and HZ. Youre not getting a picture at all.
Can you move this to a BUG post related to your box along with youtube links so we can at least see the other examples of this behaviour and how you claim it was resolved.