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Re: Color balance is off. Colors change between over...
You said that when you bump the television color will change .most likely this problem is a loose connection or cold solder of the joint of the soldered part..but you said solder joint is to be OK, it seems you have the knowledge in electronics and tv cercuitry.Problem like this is in the CHROMA-BANDPASS AMPLIFIER section there is an IC there ,these IC process the color ,change this IC and make some reheating the solder in this section..
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Are you using component cables into the TV? It sounds like one of the 3 video cables may have come out saturating the red colors. Check your cabling int he back of the TV, see if you remove 1 by one if that changes the colors. Each cable on its own should have a picture with either red green or blue colors. If any of them are missing the picture then the colors will get messed up when all 3 are plugged in. If you are not using component cables then check the color settings on your TV. Somewhere int he menu of the television you should have something like picture display settings that let you adjust the colors. Check and make sure that the reds are not over configured or the others are not set too low. You may also want to check that your source is proper as well. Check that other sources look okay or if it is with all different connectors/sources that the issue occurs on.
If your talikng about alignment that is done through the Convergence feature. If its the color balance youre refering too its most likley indicating that the CRT coolant needs replacment as that will make the red Tube dominate and wash out both blue and green colors untill they appear dull and dim.
Red color gun has failed, which will make the picture over saturated with the other two colors(blue,green) the bad news is the three color guns need to be replace in a set(all at the same time) because if you only replace the red it will over saturate the older blue, green guns then your picture will be mostly red.Unfortunently in most cases it's not worth the investment, better off to purchase a new tv. Good luck !
Normal color picture is composed with 3 colors R-G-B (Red-Green-Blue). Picture turns Red means: Missing Green and Blue colors (many reasons: bad contacts, projector tubes dead, and other...). Try to give some "tabs" to diagnose ... I don't know what is the type of your Projection TV, how long you owned it, to have more idea.
Picture Mode: Expert1
Fresh Contrast: Off
Noise Reduction: Medium
Black Level: Low
Real Cinema: On
Color Standard: HD (N/A w/HDMI)
White Balance: Warm
**Method: 10-Point IRE
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
You're probably missing one of the other colors, green most likely or blue. There are adjustments that can be made to bring things back into balance but you need to know what you're doing. First, I'd have a look and make sure all your tubes are working correctly.
They should be adjusted to set voltages. however it is best to shut the color level to the lowest setting then try t balance the screens to achieve the best black and white picture. then turn up your color level. Your brightness level should also be set to 50 % then when you adjust for the best B&W picture. You will have better color and brightness when you reset your color and brightness levels. Hope this helps.
Usually if you remove the speaker grill in front there is a convergence panel that can be carefully removed. If you look inside you should see a small rectangular block with six controls. They are labelled focus and screen, and red, blue and green. Adjust only the screen controls very carefully and slowly. I would recommend reducing the red slightly brfore raising the green and then blue until the picture looks acceptable. Be sure to center the on screen controls before starting.