I've had this TV for about 7 years now and it's served me well. The problem is the picture now appears to have a red tint. This tint is there no matter how I alter the colour. In fact it does not appear that I can change the colour or tint settings - the graphical display shows that I am changing the settings but the picture remains exactly the same. I have a Grundig Sky decoder and use only that to watch TV programs (I haven't connected up the RF to reduce interference). Any thoughts? Thanks. FedSki.