The TV picture occasionally freezes or pixelates (goes into little blocks) is this normal?
Yes, even in the best possible installations this still occurs occasionally meaning say 2-5 times in a half hour show and other times not at all. But if it is frequent or continual then there is something wrong. One of the trickiest things with digital is that it goes from a perfect picture to a frozen or no picture and back with no in between showing you what is going wrong. Digital is susceptible to electrical interference caused by power lines, microwaves, electric motors and faulty light transformers and dimmers- to mention a few! On analogue TV you just got a few dots and dashes across the screen and the picture and sound was still OK. With digital the image cuts out and back often losing sound and picture for a moment.
