My lg projection tv model rt 62na31rb curved color problems

SOURCE: HITACHI Projection TV 53FDX20B having too much red color

my hitachi projection big screen tv 57SWX20B has a draping affect across top of screen why?

SOURCE: LG Rear Projection Television Model RT-56NZ23RB - Fault

For my LG TV - LG RT-56NZ23RB, I replaced two STK 392-120 chips and it has fixed convergence problem now.

SOURCE: color distortion and arched picture

Your TV most likely has one of two possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

• Screen looks 3D
• Colors don't line up
• One or more colors can't be adjusted when using the convergence menu.
• Screen is bowed or warped.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.

Solution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.


TV set after fluid change



Solution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

SOURCE: sony projection tv convergence problem

You need to replace the convergance IC's and a pico fuse on the power supply

Testimonial: "thank you!"

SOURCE: Our L.G tv ( model RT-44NA11T)has color problems.

If your TV is not DLP, replace STK ICs convergence.will have part # ON THEM . Projection has 3 tubes a red/ a blue and a green TUBE ---DLP has 1 Lamp.