Just after 3 weeks the awarded TV won't start-up any longer. The screen stays black although one can see some reflection of the HDMI connected cable tuner on the screen. Let's say it has become a black-black TV instead of a color TV.

I did already disconnect the TV and reconnect, but this was not successful.

Any other suggestions?

If this would be a forecast of the reliability of this device I have some serious doubts....