Question about Projection Televisions

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Color My tv mixing colors-green were go blue....

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No button

Posted on Aug 30, 2008


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You need to re converge the set...theres should be a convergnce button on the remote

Posted on Aug 29, 2008

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1 Answer

My tv screen when on turns yellow then after a while it will switch back to normal colors what can be wrong with it....


Televisions covered: all Projection with yellow picture, but not Projection TVs with a yellowish tint surrounding objects in a nearly normal picture.

Yellow = red + green
normal picture = red + blue + green (RGB). See illustration.

12_27_2011_5_00_56_am.png

Fig. 1 Additive color mixing in an RGB monitor, or RGB Projection TV.

The circuitry powering your blue output, or the blue light engine itself is starting to fail.

Operating Theory:

The lamp module shines a bright light into the optical unit; there are a series of lens and baffles, and at the top of the light engine, a lens puts the picture into a mirror which is reflected onto the screen; All video and color is processed thru the light engine. Blue most commonly fails first, leaving a yellow picture.

Dec 26, 2011 | Mitsubishi WS-55805 55" Rear Projection...

1 Answer

If looking directly into screen you see all three lights Red Green Blue next to each other illuminating parts of the screen that color.


U mean on tv screen colors lines R,G,B colors are all mixed up and mis alignments all those R,G,B colors lines on the tv screen?Yes,u have colors shadow picture or 3D picture look alike?Yes,ur tv have a problems known as a convergence problems,it is dead.This tv convergence board it is dead must require replacing 2 STK of convergence ICS and some or all of it resistors too.To fixed the tv convergence board to fixed the tv picture convergence problems.The shop will cost u like $300-350 for parts and labors.

Jun 22, 2011 | Panasonic PT-52DL52 52" Rear Projection...

1 Answer

LG Projection TV Model# RT-49NA11T Green color gun shows bent arc on top & bottom.Red & blue guns are ok.How to adjust the green gun to remove the bent arc. This is causing picture shows mix...


This problems ur tv have can't not be fix by adjustment.The tv have a problems known as convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadow pictures or 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts on the tv convergence board,must be replaced to repair the tv convergence board to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Jan 10, 2011 | Panasonic PT-53WX53 53" Rear Projection...

1 Answer

Signals to the tv from other sources and the image is P and G


Soon as though you have your wiring mixed up. Those leads, colors you describe are for Compnent Video signal....Red Green Blue. Now  the Others  are for Audio Visual signal , Yellow, Red, White... They are NOT compatable. IE: You cannot mix them. Check in your manual as to what  types of lead is needed how to wire it up.. 

Feb 01, 2010 | Projection Televisions

1 Answer

Half of my tv has a green tint to it. what's wrong with it


you may have the 3 componet cables mixed up. it is easy to mismatch the green and blue cable if you are color blind.

Dec 22, 2009 | Panasonic PT-50DL54 50" Rear Projection...

1 Answer

There is green and pink on color on half of my lcd


Hi,
I did some research and I found this link that will should you the schematic of the LCD technology,It sounds like one of you LCD color ships is not working properly,your TV has 3 ships (BLUE,GREEN,RED)
you can see how it work; http://www.oerlikon.com/ecomaXL/index.php?site=OPTICS_EN_lcd_projector .Whay happening is that due to the high density the lamp this ships tent to wear out and the three major color don't mix properly causing the color discoloration on your picture.You can find the parts you need at DM http://www.discount-merchant.com/?click=52978 (The correct diagnostic can only be made be a tech) I hope this info helps you please keep us posted .

Sep 25, 2009 | Samsung DLP HL-P4663W 46" Rear Projection...

2 Answers

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

Oct 05, 2008 | Projection Televisions

1 Answer

54" Projection TV


Your green gun in our tv is misagligned/out of focus. Your tv uses red, green and blue guns that layer in different shades and mix to create the different colors. Your green is a little off so the colors aren't mixing right which explains the green haze and the shadows. A tv repair man can fix this problem pretty easily and it isnt expenisve.

Aug 28, 2008 | Akai PT4298HD Rear Projection Television

1 Answer

Mixed colors and separation of colors


Common problem known as convergence. The most common reason is the failure of convergence ics. these ics fail all the time because there big and get fairly hot. there is a possiblity that it can be reconverged if the convergence cuircit is not damaged

Jan 05, 2008 | Samsung HCN653W 65" Rear Projection...

1 Answer

Yellow hue


1)Please verify your model # from back of set......

2)Reduce the color to minimum or tune in a black & white chan.
you should see gray, not yellow hue

3)Remove lower front grill cover & access panel.....locate the
focus / screen control block...turn blue screen control slightly
CW......red,green and blue must mix to equal gray

4) reset color to normal level.......reassemble

Dec 22, 2007 | Toshiba 57H82 57" Rear Projection...

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