No problems with the picture when input is from DVD player.
Hi - yes I guess you would call it mosaicing, parts of the picture across the whole screen break up randomly and constantly change, the sound is also affected and seems linked to the change "mosaicing" in the picture. At no time does the picture completely disappear.
Look forward to your further feedback.
Hi Thank you for your help with my questions - I am not able to check the signal with another tv, and as you indicated it may be a problem with HD tuner. On this basis I am considering purchasing a new tv.