I have just bought the ACER which has bluray and HDMI out. I connected it to a spare slot on the 875 but the picture is awful and has a green tinge. I have tried different sockets on the Onkyo and a different HDMI cable that works fine for my Humax. The picture is fine if connected directly to the TV. I have the recommended settings(1920) as detected by the laptop. Any suggestions gratefully received