Blending Colors/Flickering Display

See troubleshooting guide for help
LG 49UJ6300 Service Manual (Page 25 of 65) ' ManualsLib

It seems that you have an issue with the power board. You could also have faulty convergence modules causing the blending of colors.

I wouldn't advise you to open the set yourself, because of the complicated circuitry and high voltage. It is safest and best to get TV repairman to look at this issue and provide a fix/repair.

If you wish to get some details; check the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Flickering can be adjusted. Type in the keyword "Flickering"; in the search box, at the top of the display window, to get gathered related posts.

When it flickers, can you still see the text when the screen goes dark?
May have to use a bright flashlight set right on the display to see
the text on the screen beside where the light sits.
That will tell you if it's the backlight.

You can also look at a grazing angle into one of the edges to see if the
backlight is flickering when the display does.
When it's cold, does it start with a slight pinkish color? That can be
a sign of backlight going bad.
Anything interesting happen when you flex the cable by moving the screen?

I'm not saying it's impossible, but I've never seen software cause
consistent screen flicker. And if the vga port doesn't flicker, sw is
even less likely the problem.

If you bet the odds, you'd bet on a bad display cable.
Won't hurt to try replugging it.

If that doesn't help, then your monitor may be dying....

this may have problems with lcd controller driver the lcd color comes and driven with this controller. only quilified technician can test it....

The tv colors wheel is dying,replaced the tv colors wheel,will solved this problems.Hire a tv Tech.to change the tv colors wheel,it pretty hard to change the colors wheel in this tv.Because u require take out many machanical parts before u even can come to the tv colors wheel itself to change it.

The light engine is going bad. To be specific the color wheel is wearing out and cannot be replaced seperately as it's part of the light engine. Mitsubishi extended the warranty on the light engine for an additional two years. You need to contact a local Mit's authorized service center to see if yours is still covered. Better hope so as the light engine is expensive.

flickering is a sign that bulb will go out soon. Also check if the bulb fan is clean and running.

Hi,

Inverters On The way Out.
Try gently Pinching the screen at the top and bottom of where its Faulty ( On the Plastic casing ) Not the actual LCD.

Mike @ Compurepair.

the color wheel is dirty. It just need to be cleaned.