Color Red is missing

please do this test: God bless you

• Reset component settings. Usually, the problems you encounter with a projection TV may be resolved through the resetting to its factory settings. If you experience inaccuracies in the color, reset the television's PerfectTint/PerfectColor capabilities. Simply press the Menu tab and then highlight "Perfect Color" using your right key arrow. After this, press "Enter" and then "Reset" in order to reset to factory settings. If you have audio / video problems (VCR or DVD player), simply press "Menu" and highlight the "Reset" option.

Reset television controls. In case you cannot fix your TV via its component settings, there are other ways of resetting. Just select "Menu", key in "1, 2, 3", and then press "Enter." In doing this, the TV's manufacturer's specifications will all be restored. If your TV's power system does not function, you should perform a complete system reset. You can do this by clicking on Reset System button located at the TV's control panel. Your television will be turned off and then a green light (LED) will quickly flash for approximately one minute. Once the light has stopped flashing, your TV should immediately turn on.

The red CRT tube is failing. They are rated at 3000 hrs of operation. Check the red CRT face to see if there is a lot of dirt on it or has a discoloration on the inside of the coolant chamber. These tubes are scarce and expensive. You may want to consider a new TV.

Adjust the tint, contrast and color settings on the TV remote control to determine if these changes solve the problem.
Read more: How to Troubleshoot a TV With Green Picture Problems ' eHow.com http://www.ehow.com/how_5387115_troubleshoot-tv-green-picture-problems.html#ixzz1goh6jjyV

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.

Go to menue on controller, then Picture, then adjust Color and Tint to you taste. The color ajusts Blue and Green move left more blue move the slider right more green. The Tint controlls red. More red move right less left. Also chech Color temp setting.

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

Good Day,

Try resetting the TV by unplugging from wall outlet for 3 to5 minutes then plug back in. If no fixya take front grill off and panel and adjust the screen controls, turn color off adjust for Black & White Picture. Good Luck, big IRISH.

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%

This is an indication that the red gun is being driven too hard. Have you tried to adjust the red color control? If not try this first and if the control can not adjust the color then you will have to find out if the control grid on the red tube is working and has the proper voltages present. Which you will need the following equipment to do. Multimeter Oscilloscope Along with these you will need a schematic to show you what the signals and voltages should be. And I might also suggest having a pattern generator and using the color bar signal since more then likely that is the one being used in the schematic as the reference signal.