i have a sony 4k tv - 70 inches - bought like 3 years ago. verizon fios quantum set top box - picture was great until it was unplugged for two weeks during construction project and plugged back in. now the coloring/tint seems noticeably off. the faces of individuals look like purply death like cold. the whites are reddish and their is lime greenish to things that are supposed to be yellow...it just looks out of whack. i have tried everything from factory reset to messing with the settings... bottom line: it was fine when i first got it...plug and play...no changes to any settings. I have a very good HDMI cable as well. I try two diifferent cables just in case. same result.