A:AnswerI had this problem before. It was a bad hdmi cable. I also had the same problem with one that had the hdmi cable hanging down and pulling on the hdmi socket. Try replacing the hdmi cable and making sure it doesn't have tension pulling on the socket.
A:AnswerI had the same problem, I returned it for a different set. From what I've read it has to do with the response time of the panel and is typical for fast moving scenes. I can only think there's a bad batch of panels as I can't see all the glowing reviews if this were normal. It was cheap but...
A:AnswerGonza,
The users guide shows the TV has these tuners:
Analog NTSC
Digital ATSC, 8-VSB, Clear-QAM
FYI - you can find all the Insignia product manuals at insigniaproducts.com