Whilst watching the TV, all of a sudden, the screen just blanks out, as in black screen, 2 or three seconds later the program comes back on again and continues.
I had this happen with my old Virgin box and the phone help service told me what to do tho correct the problem but, that was a couple of years ago and, being 80 years of age, memory is not my strong point. 🙂 And you just cannot get phone help from Virgin these days.
I've experienced the same thing. As you say the screen goes blank for 2 or 3 seconds, as though the set is turned right off. Picture and sound gone. Then it just comes back on again. Happens about say, once every 10 days.