Question about Projection Televisions

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Lcd tv screen comes on , but will only display the lightest tints of colors, making the picture almost impossible to view. three seems to be a distinct absence of blue .

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I may need new CCF (Cold Cathode Florescence) backlight tubes. Most lcd's detect when one goes out and kills the power altogether to the light tubes.

Posted on Nov 08, 2008

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I have sony 50E200A,there is problem with colour combination/mixing....green colour is too bright.please tell me how to resolve this problem.thanks


You need to calibrate the colors

The first step in calibrating your television lies in paying attention to your surroundings. Sit in the same spot you'd normally sit in to watch your TV. Then, make sure the lighting is at the same level you'll be using to watch movies: setting your TV to overcompensate for a brightly-lit room may give you distorted results. Watching in complete darkness may cause undue eyestrain, but a dim, diffuse light behind or to the side of your LCD TV is best. Just make sure to avoid any glare or reflection on the screen.

Next, be sure your display has "warmed up" for at least a half hour before attempting any calibration; this is to ensure that all the components of the display are at normal operating temperature and best approximate normal viewing conditions. You can take this time to familiarize yourself with the various display controls on your particular TV--get the manual out if you have to. The better you know which controls are available on your LCD TV, the better your end results will be. Though different manufacturers give different names to the controls, these are the levels you'll be adjusting:

  1. Black Level, normally found on the Brightness control
  2. White Level, usually called Contrast or Picture
  3. Sharpness, or sometimes Detail
  4. Color Saturation, usually labeled Color, or maybe Chroma
  5. Color Tint, also known as Hue

Beyond these basic settings, many modern TVs come packed with so-called "picture enhancements" which in reality do nothing but spoil an otherwise accurate, lifelike picture. Take a moment to dig through your TVs menus and disable any of these "features." What you're looking for is anything labeled edge enhancement or detail enhancement, flesh tone or color "correction," etc. This is a broad generalization, but basically anything not listed in the five controls above can be safely turned off. Another thing to check for is often called a "Picture Mode," or something similar: in reviews, we often find best results from a Movie or Cinema mode, which usually gives the most accurate picture with the least "enhancement." A Normal mode is a safe bet when this isn't available, but definitely avoid anything called Vivid, Dynamic, or Sports mode.Sports mode may make the grass look nice and green, but unless you're watching The Masters, it's probably not that green in real life; Sports mode is just ruining the color.

On a similar note, have a look at the options available for your LCD TV's backlight settings. Like many of the settings, the backlight is probably set to its highest brightness, which is probably too bright for comfortable extended viewing, and shortens the lifespan of your LCD TV as well. Drop this setting down at least to it's "normal" value, or even try out the Low Power or Power Saver option if it's available (in dimly lit rooms).Finally, a word about Color Temperature. Without getting into the rather complicated science behind it all, Color Temperature basically refers to the peak wavelength of a light source, which affects the color tint given to images which should be "pure" white. Suffice it to say that while most video is produced to what's called a "6500K Standard," (6500 degrees Kelvin), not every TV comes out of the box set to display that standard properly. In fact, factory settings are very rarely are set close to 6500K.

Dec 12, 2010 | Sony Projection Televisions

2 Answers

Yellow Tint over picture...


well..it's simple really...yellow is from a degrading video unit and system board..so, you'll find that it's high time for a major service situation.

May 10, 2008 | Samsung HCN4226W 42" Rear Projection...

5 Answers

Red tinted picture


HI,

Try reseting the TV first by unpluging all the cords for 4hrs and then plug it back.

I will be posting more troubleshooting steps..

Apr 03, 2008 | Mitsubishi VS-50605 50" Rear Projection...

2 Answers

I have the same model. My picture is bad my white


If the pic seems dull and the colors are all washed out as well as the tint not being able to be ciorrected to correct tones. Its almost always caused by the CRT coolant needing replacement. You can get the phillips CRT coolant kit from www.tvrepairworld.com the kit contains the coolant for all three CRT's and the CD with instructions.

Jul 18, 2010 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Green tint to screen


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai2_bing.gif,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Apr 21, 2010 | Hitachi 42V710 42" Rear Projection HDTV

1 Answer

Screen has green tint, it is an LCD 42 inch


First of all, that is not an LCD tv. It is DLP, which is a common mistake because the picture is very similar. DLP tv's use a high-power lamp that reflects light off of thousands of tiny mirrors into a spinning color wheel which gives the reflections color. Each little mirror is one pixel, which can be any color depending on the hole that it goes through on the color wheel. The color wheel may be spinning slower than normal, which could make all of the light go through the green filter on the color wheel, and give your screen a green tint. Have a trusted mechanic take your tv apart and dust the inside. If that doesn't fix it, you may need a new color wheel or bearings for it (that help it spin). You should not pay more than $200 for a bearing replacement on this tv.

Thanks for asking.
-Josh

This pic might help your understanding.

http://static.howstuffworks.com/gif/projection-tv-1-chip-projector.jpg

Feb 28, 2010 | Panasonic PT-43LC14 43" Rear Projection...

1 Answer

My LCD projection HD TV model KDF-50WE655 has an


Is your TV LCD or DLP? Encompass Parts shows your model to have Lamp with part number for lamp as A-1606-034-B which then means DLP ,which then it means you may have your light engine going bad which is called optics unit Block part number is
A-1084-660-A They do have them in stock Call 1-800-638-3328 or visit their website www.Encompass Parts.

Nov 30, 2009 | Sony Grand WEGA KDF-50WE655 50" Rear...

2 Answers

My sony kp-57hw40 has some color issues most of the time the picture has a very blue tint to it. Occassionaly it has a very red tint to it and sometimes it looks ok. What might the problem be?


To correctly repair your tv all three CRT's (picture tubes) would need to be replaced as instructed by SONY service bulletins. Many years ago SONY wanted a better brighter picture and began making some CRT's differently and "better" . But they sadley did not do enough testing . After a few years they realised the mistake and they paid dearly for it. Unfortunatly enough time has passed that the $750.00 or more cost or repair can only come of the consumers pocket . They are good solid tv's when the CRT's get replaced with Panasonic picture tubes.
Sometimes screen control adjustments can done to make the TV work for now but usually a flicker in color remains and it most likely will get bad again .
Hope this explains it for you.

Oct 11, 2009 | Sony KP-57HW40 57" 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

Green tint


Is the green color on displays as well. (Displays means the video generated by changing the volume or activating menu-and seeing if this is green as well. Secondly, turn the color all the way down to zero. Do you see a "normal" black and white picture? If you do, then the picture tubes are not the problem and you have a failure in the color processing area. Let me know....

Mar 07, 2008 | Hitachi 51F500 51" Rear Projection...

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