"This, is the answer you seek: RGB components dont apply to LCD tv, so you can ignore that (liquid crytal is clear, not coloured) The Blue LED phenomenon exists in LED backlights that are manyfactured by a company called Vestel. Notorious in the TV trade for building sub-standard TVs, and, supplying parts to other manufacturers. Once the Vestel LEDS begin to age, they turn blue, then blow. (its unlikely youl see them blow, as you’ll be so sick of watching a blue tv, youd have done something about it before they had the chance)
The solution is to replace the backlight LED array in its entirity, and not with a Vestel built kit, but any other 3rd party array.
HOWEVER…. Consumer rights act 2015 may provide you wih an alternative way out. The TV must be fit for purpose for 6 years after the date of purchase, otherwise the company you bought it from are liable. Net result = 1 free telly."
"Ok, every TV made in the last 30 years has some sort of “secret"" service menu built in. I'm assuming the color balance of the entire screen has drifted, and the problem is not a bad screen. If there's a bad module or screen, making adjustments will not fix the issue.
So the majority of the LG models are ez to get into service mode. Simply press the “menu"" or “ok"" buttons on the TV and the remote control at the same time. Some TV models have enter/select/set buttons. Whichever buttons work, after a few seconds the TV will pop up a password entry box. Common LG passwords are 0000, 0413,7777. Enter password, press enter/ok/set button. The correct password will open the service menu.
Be careful in the service menu because changing values of the wrong parameters can disable functions and features of the set. What you are looking for is white balance adjustments."
"Hello all. In response to the “blue screen” problem, please read the answer given by - den@techfixed4u on 03/16/2019 - in the earlier posts above. My LG tv was purchased four and a half years ago, but following den’s advice, I went to Currys/PC World, from whom the tv was bought, stated my reason for requiring a repair, mentioning the Customer Rights Act (2015), and they agreed to repair it without any fuss or argument!
I thought I might have to agree a deduction due to “fair wear and tear” but not so. I had to pay £95 for the tv to be collected and inspected, but if tv was found to be faulty, (which it was) then it would be repaired at no charge, and the £95 would be refunded. So I now have a great tv picture once again and a refund!
Huge thanks to den@techfixed4u and the ifixit.com website. Thanks also to Currys/PCWorld."
My TV from 2017 43 inch is starting to turn blue. You can tell slightly on white colours. And reading from this forum its a dead end chasing anyone for repairs. I guess I'll have to buy new TV when this one gets too annoying.
