I have a Samsung A32LN450 TV, connected to a H21 Directv satellite receiver via about 40ft of HDMI cable. It worked well at first, then the TV background got inverted color that is became a white background and all colors got inverted. I unplugged the HDMI cable and when turning the TV on it still has the white (very light gray) background. I replaced the TV with another Samsung TV A32LN350, it showed the correct picture for about 2 minutes, and then the background got inverted as well so I have a very light gray almost whitish background even after I unplugged the HDMI cable.
Could it be the low HDMI signal causing an internal switch in the TV to flip? how to reset the TV back to its original setting? I tried going via the TV menu and selected reset picture to factory settings but that did not help.
Is there a recommended HDMI signal amplifier to purchase, and will that help restore the TV to the correct state?