Hello all, I have a Panasonic lxd700 32" that I have had for 4 weeks at first the picture was fine and I was very happy with the tv, but over the last few days the picture has had a yellow look, a bit like a cloud that gets worse over a few hours use. The company I brought the tv from say it is backlight bleed is this true and if so why has the problem only showing now? Advice please.