Yellow image The Tv color is basicly yellow instead of white. We have green tint but no blues.

I painted for many years. And now work with photoshop each day.
The selected grey was probably in the blue family instead of yellow family. Most interior colors look better if they come from the warm yellow family, including greys.
There are greys for every color in the spectrum ... from yellow to red to blue. If you pick a grey with bit of red, it will start to look mauve. Orange and it will look brown. Blues inside the grey will turn purple real quick.
Moreover, all colors and finishes are contextual and pick up surrounding colors. Especially satin-or-shiny finishes, because they pick up local colors that change intended hue. For example blue drapes will turn white room bluish. If the house next door is red, and the light comes in window, it will turn white room into pink. Green leaves, and the light from window turn white room green. So when you pick a grey that has bit of blue, the color can change for many reasons beside light bulb. Each room is totally different.
Most folks pick colors by looking at color chip in the store, instead of painting a section of wall inside home. And most folks do not ask the paint store clerk which tints are in that particular color. Sometimes the black tint will turn some bases into a bluish hue.
Go back to paint store and get another grey color from the yellow spectrum.

If you need further help, I’m available over the phone at https://www.6ya.com/expert/gene_9f0ef4df2f9897e7

Hi:
You may have a problem with the inverters in the unit, they are responsible for lighting up the back panel. Check or have checked the power supply voltage to the inverters, should be around 18-24 volts DC. Also leaky capacitors on the power supply will cause this issue as well as leaky or puffy capacitors on the inverter.

i think is the blue mirror in side the tv...it has 4 mirrors inside

I have an old Toshiba TV and was going to replace it with a new plasma because it has suddenly (the week of July 19, 2010) lost color. It has only green and blue tint. Changing the "tint" on the menu didn't help. The color comes and goes relative to nothing that I can measure, such as how long it is turned on, etc. Reading other complaints from owners of Plasmas, I am thinking it is cable related. I have Charter Cable. Playing a DVD, I have to readjust the tint back to normal. Hope this info gives clues.

The color image is comprised of three colors, Red, Green, and Blue.
All the other colors are mixtures of those colors. The yellow picture indicates that your set is lacking sufficient blue drive.

First of all check to make sure that the tint control is not misadjusted.
The next thing is dependent upon the age of your television. If it's an older set that yellow tint is a sign of an aging picture tube.
If it's a newer set, less than 5 years old, have it analyzed by a electronics technician that is familiar with televisions if he is skilled enough he will know right away if it's the picture tube or not.

if projection its bulb prob blue one

Picture Menu
Picture Mode: Expert1
*Backlight: 16
*Contrast: 83
*Brightness: 53
Sharpness: 50
*Color: 55
*Tint: 0
Expert Control

• Fresh Contrast: Off
• Noise Reduction: Medium
• Gamma: Medium
• Black Level: Low
• Real Cinema: On
• TruMotion: Low
• Color Standard: HD (N/A w/HDMI)
• White Balance: Warm
• **Method: 10-Point IRE
  • 10 IRE
    • **Red: 1
    • **Green: 2
    • **Blue: -16
  • 20 IRE
    • **Red: -6
    • **Green: 0
    • **Blue: -7
  • 30 IRE
    • **Red: -5
    • **Green: 0
    • **Blue: -4
  • 40 IRE
    • **Red: -8
    • **Green: 0
    • **Blue: -4
  • 50 IRE
    • **Red: -4
    • **Green: 4
    • **Blue: -4
  • 60 IRE
    • **Red: -6
    • **Green: 6
    • **Blue: -5
  • 70 IRE
    • **Red: -8
    • **Green: 3
    • **Blue: -10
  • 80 IRE
    • **Red: -8
    • **Green: 7
    • **Blue: -16
  • 90 IRE
    • **Red: -9
    • **Green: 5
    • **Blue: -18
  • 100 IRE
    • **Red: -10
    • **Green: 4
    • **Blue: -9

Color Management System

• Red Color: 0
• Red Tint: 0
• Green Color: 0
• Green Tint: -15
• Blue Color: 0
• Blue Tint: 11
• Yellow Color: 15
• Yellow Tint: 2
• Cyan Color: -15
• Cyan Tint: 0
• Magenta Color: 0
• Magenta Tint: -1

lg70 nice tv excellent processor just to bad there is no intensity control on color management oh well still better than what the three s are pushing block out the hype lg will be number 1 in a few years haters are starting to come around and well leds coming,

p.s. i dont work for lg just tired of losers bashing stuff because they dont own it.
im isf certified those settings are right on the money straighter than a ruler

Colorimetre HCFR software
AVC HD 709 calibration disk
Spyder2 colorimeter (I know most prefer the Eye-One meters, but the Spyder2 was available from my job at no cost)

Here are the settings:

PS3 Blu-Ray player

Output Format (HDMI): Y Pb/Cb Pr/Cr (important!!! NOT RGB output)
BD 1080p 24hz Output (HDMI): On (this TV can reproduce video at 48hz for accurate 2:2 pulldown)
Y Pb/Cb Pr/Cr Super White (HDMI): On (not sure if this matters)

42LG50 Settings

Aspect Ratio: Set By Program (Personal Preference)
Picture Mode: Expert 1
Backlight: 50 (Personal Preference)
Contrast: 54
Brightness: 54
Sharpness: 40 (Personal Preference)
Color: 50
Tint: 0

Fresh Contrast: Off
Noise Reduction: Off
Gamma: Medium
Black Level: Low
Real Cinema: On

White Balance: Warm
Method: 10 Point IRE

10 (-3,8,-16)
20 (15,24,-21)
30 (20,36,-22)
40 (3,19,-40)
50 (8,34,-41)
60 (10,50,-20)
70 (-5,50,-8)
80 (-16,50,18
90 (-14,50,30)
100 (-22,38,21)

Red Color: -3
Red Tint: 0
Green Color: 10
Green Tint: 0
Blue Color: 14
Blue Tint: 0
Yellow Color: 0
Yellow Tint: 1
Cyan Color: -11
Cyan Tint: 0
Magenta Color: 0
Magenta Tint: -2

Take time to get used to the settings, you may think the screen looks dull at first. The truth is most people have way too much contrast on their TVs.
These settings will also work for Cable or Dish hookups, in which case you may change the Noise Reduction option to Medium to reduce signal noise.

OR....

2POINT IRE

Backlight: 65
Contrast: 55
Brightness: 45
Sharpness: 50
Color: 45
Tint: 0

Fresh Contrast: Off
Noise Reduction: Off
Gamma: Medium
Black Level: Low
Real Cinema: On

White Balance: Warm
Method: 2 Point

Red Color: 3
Red Tint: 0
Green Color: 9
Green Tint: 2
Blue Color: -1
Blue Tint: 0
Yellow Color: 6
Yellow Tint: 5
Cyan Color: -1
Cyan Tint: 1
Magenta Color: 2
Magenta Tint: -1

if you have hd cable or satellite box make sure the component cables are properly connected(green red and blue) and matching same color in source (cable box or satellite and tv as well)
also make sure in tv menu that color and tint are 50%

Loose connections in CTR board ( picture tube), resolder it.