My repairman here in the Philippines says my TV needs a new screen as the color problem is not repairable. There are a red and black area to the side of the screen. Pressing on the tab area at the top changes it but he says this model is unrepairable by repeating them. This is a 60 inch TV and the new screen here is $1,000 USD.
A Samsung approved service center and the Samsung official service tech. verified the other technicians opinion that the only solution is screen panel replacement which irritates me as that's a lousy way to build a panel.