This is my first post and it takes the form of a huge thankyou to all the forums contributors. Your contributions have provided me with the answer to a frustrating problem for which I am grateful. I now have a clear course of action. The problem? It appears to be related to the 'predator' look displayed by the Z3 when the source is HDMI. The difference? The PJ is meant to be fitted with the new firmware; the look is not time related, it just is that way all the time and the PJ does not lock up. Thanks again and I wish you all a Happy Christmas and New Year.