Hi, hopefully some one can help, Panasonic TV, is now 6 years old, although only has approx. 3 years viewing. I have just noticed when viewing the TV via the HDMI1 port, the picture is perfect, when I switch to HDMI2 and HDMI3 you would think the colour and the brightness had been turned down, i.e. looks washed out. I have no idea what to do and I don't want to replace the TV just yet.