Question about JVC AV-56WP74 56" Rear Projection HDTV-Ready Television

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Colors are out of line

The red wont line up with the green and blue

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  • zippyphd Jul 23, 2008

    Same thing.. colors out of align. Would love to find an inexpensive fix..

  • zippyphd Jul 23, 2008

    Same thing.. colors out of align. Would love to find an inexpensive fix..

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1 Answer

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  • 132 Answers

When A REAR PROJECTION TV has coloured outlines or a 3D image the Convergence Circuits most likely need attention.

Replacing the output amplifiers (located within the Convergence IC's) allows the pictures to line up correctly, and no more color outlines.

This is the most common fault in all makes of rear projection TVs.

Some models of TV require major disassembly and considerable shop/manufacturer's support to repair because of their design that causes other power supply or vertical deflection problems. The poorly designed products require a "bench" repair that can typically cost from $350 t0 $700.

Some TVs are designed for on-site repair and have more reliable circuit design that does not usually cause damage to other parts of the TV when convergence chips fail. The ones that usually allow reliable on-site repair are JVC, Samsung, Sony and Hitachi.

It is normal to have some resistors in the circuit burn up or increase in value from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced with the right value or the chip may fail again.

This is not a simple repair like changing batteries or a fuse. Reading through the other posts shows many that try and end up with bigger problems.

Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with other "new and improved" IC's, like STK 392-150. These are devices with different characteristics and require different value resistors in the circuit. Replacing with the STK 392-150 will cause overheating of the resistors and a damaged IC.

If you are in Calgary, I can help. If not, get someone that has experience working on your JVC. My website is below with some costs and explanation.

calgaryconvergencerepair.weebly.com/convergence-explanation.html

Good Luck,

Easyab

Posted on Aug 15, 2008

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1 Answer

My rear projection tv used to have green lines , now the color seems off and now its blue lines... How do i fix it. Color going out??


If colors are skewed or looks 3d it is a convergence problem.

Some sets when the convergence grid is called up will have green lines--green is fixed and red/blue adjusted to it.

To tell you how to fix I need to know brand and model number.
5_17_2012_3_46_45_pm.jpg5_17_2012_3_47_06_pm.jpg5_17_2012_3_47_33_pm.jpg

These are typical convergence problems--no two sets will look exactly the same.

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What are the color codes for a factory stereo system in a 2006 Nissan alttima


use at your own risk. I can not confirm these.
+12V DC Battery(Constant) Yellow/green 31 15 Amp Fuse box on left front of engine compartment, near battery. Switched Accessory Purple 6 10 Amp Fuse block behind left side of dash Power Antenna NCA Green for antenna signal Illumination Red/yellow & red/blue Steering Wheel Control Wire Red/white, green, and blue If equipped, as for Mid-Line. Left Front + Blue/white Left Front - Blue/red Right Front + White/black Right Front - Blue/black Left Rear + Green/yellow Left Rear - Black/yellow Right Rear + Blue Right Rear - Red
titleicon.gif AT SPEAKERS
Wire Function Color Note Left Front Tweeter + Blue/white Left Front Tweeter - Blue/red Right Front Tweeter + White/black Right Front Tweeter - Blue/black

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I have a cat5e wall plate(tph552) a cat5e wire4 colors don't match and 4 colors do ( brown,orange,blue,green,) are ok then wire has 4 that are white with (brown,orange,green,blue,)stripe. and wall plate...


The wires/colors in a category 5e cable run in pairs. They should be tightly twisted together, mostly white with a blue tracer. mostly blue with a white tracer- mostly white with an orange tracer- mostly orange with a white tracer, mostly white with a green tracer- mostly green with a whte tracer, and mostly white with a brown tracer- mostly brown with a white tracer.The jack you have sounds like a standard telephone or cat. 3 jack. If the jack is being used for a standard telephone line, you'll need to connect one of the wire pairs(usually the white/blue pair) to the green and red terminals on the jack.Make sure that the same pair is also terminated at the main telephone junction.

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1 Answer

Projection lights don't line up


Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

You can see more examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

No blue just red and green tint


adjust the blue bias on the high voltage block .
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Picture calibration settings for 42lg70


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

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1 Answer

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