UN55NU6900B 4K TV. Just replaced the right side bank of Edge lit LED's. Works fine now. I cannot get the color on Youtube streams correct! Always a green biased screen or its totally washed out white. I've tried to crank the reds, lower contrast, factory reset. No real difference. Can anyone tell me what their color values are that look correct so I can mimic them and make a decision if this TV is working properly? We primarily watch youtube (6 year old boy) so I'm a little puzzled why our cheap semi smart 55" Silo brand backlit TV has so much better color that this. Went to this TV for the richer app catalog. Silo brand could not add apps but has a much richer color picture.