There is a dark red tint starting in the center of the tv and lightening as it reaches the edges, not sure when the problem started. I ust got the tv from a friend.

Hate to tell you this but it sounds like your picture module is going bad. The bluish tint tells me it is leaking to the outside. Some problems with the LCD picture module can be fixed but I never had to fix one. Might check out some videos on repairing LCD picture tubes on YouTube.
Gillight

not so sure if warped lines about it not being convergence, if the lines are diagonal and light red etc it may be a screen circuit issue. Hard to tell from description----take a few good photos and post them on a free photo sharing site and provide a link here---expert who sees what it looks like may be able to help...............

did u go through the menu and check for the contrast and tints?

you have coolant in your red, green, and blue picture tubes. this coolant will start to turn dirty as time goes. the coolant should be clear but when it starts to turn, your picture has like a haze in it. coolant needs replacing. suggest local service center

Try shielded video cables and make sure you have your cables hooked up correctly. Sometimes you can conect them wrong, specially the red one. If you are using componet in on your tv, make sure the red one is not connected to your audio. The green tint is because you are missing red in your picture.

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

Please verify model # from rear of set.PVAT! Look closely at signal PCB for signs of CRT coolant leak.

does it have blue video image?

sounds like image burn,try it on normal viewing size and see if its still there and in the same area if so image burn on crt from the 4:3 aspect mode .

try adjusting the green screen control. remove the front bottom panel of the tv by removing any screws holding it in place. gently pull of the front panel, there are gromets holding it in place, you will be able to gently remove the front, just make sure you get all those screws. now reove the small wodden or plastioc panel. now you will see the screen/focus assy. check to see of the screen controls are the top 3 or bottom 3. adjusted the center screen it's the green one, the other 2 are the red & blue. it is best to adjust in a dark room where the lines will show up easier. good luck