I don’t know what the problem is but in under 12 months I have had 4 digital boxes die on me !
The latest to die is an Alba Box brought from Argos.
Lucky I was in the room because the there was a pop and flash and the box dies.I have yanked all the wires and I hope the tv wasn’t damaged. Blast the stupid quality of modern electronics as they always die when I can’t afford to buy a new one.