Question about Panasonic PT-50LC13 50" Rear Projection HDTV

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Pixilated image The colors on the images are not sharp,it looks like a magnet effect

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You have dust on the OPTICAL ASSEMBLY or bad OPTICAL BLOCK

Posted on May 16, 2009

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Posted on Jan 02, 2017

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Blue tint across screen and black shadow of sort


Hi , it seems you are experimenting a light engine problem.Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!

Apr 02, 2010 | Sony Grand WEGA KDF-55XS955 55" Rear...

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Discolored Sides


Hi,Yes your problem sounds like the DMD board.This is how it works: http://electronics.howstuffworks.com/dlp1.htm Basically the light of the lamp goes through a tunnel that carries a color wheel(rotating disc with a gamma of colors that creates the colors on your tv)then the light of the lamp goes through the DMD board which is a chip composed of around 2 million pixels that creates the images and colors.When it starts to fail it will create black bars,pixelation,color distortion or white dots on screens.Ths if your tv is a dlp if its a Lcd it will be an issue with your light engine: Here's how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo Basically there's 3 LCD chips that create the colors and image by blending together.When these chips start to melt you will get those blue spots, pixilation even vertical lines.You will need to replace the light engine. Have a blessed one!

Mar 29, 2010 | Televison & Video

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Have Mits HDTV have horizontal lines running across screen, whats the problem? After it warms up, seems to lessen but does not go away.


Hi if its a Dlp it will be an issue with the dmd This is how the dmd works: http://electronics.howstuffworks.com/dlp1.htm Basically the dmd is a chip that carries 2 million pixels that create the image and colors .When its bad it will cause pixilation,color discoloration or stripes.If its an Lcd it seems you are experimenting a light engine problem.This is how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo So basically the 3 Lcd chips that create the colors and image is going bad and thats why you get that color discoloration.Contact Mitsu or look for your light engine online.God bless you and your house!

Dec 09, 2009 | Televison & Video

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Lcd display image looks like an explosion. My


Base on your description theres a strong possiblity LCD is defective, about that magnetic closure dont worry about that it will not be affectedthe LCD its just a small magnet. you need to cal kodak for you to send the camera for repair tol free 1 800 235 6325 ext 12

Nov 20, 2009 | Kodak EasyShare C613 Digital Camera

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Picture forming concentric rings of colours - green, surrounded by blue, then red halo. What is the cause and what do I need to do about it? Thanks


If its a Dlp . Hi,its sounds like an issue with the dmd.This is how the dmd works: http://electronics.howstuffworks.com/dlp1.htm Basically the dmd is a chip that carries 2 million pixels that create the image and colors .When its bad it will cause pixilation,color discoloration or stripes.God bless you! Ifa Lcd.it seems you are experimenting a light engine problem.This is how your tv works: http://www.youtube.com/watch?v=ZLLHnQ4y-wo So basically the 3 Lcd chips that create the colors and image is going bad and thats why you get that color discoloration.Contact the maker or look for your light engine online.

Nov 18, 2009 | Televison & Video

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How to get glowing effect in coreldraw


To create a glow: make a copy of your image you want to glow. paste to the side or original. select original. Convert to Bitmap, then use Gaussian blur, select pixel width of blur, preview it, then apply it when it look good. Put your copied image on top of the blurred image, bringing the copied image TO FRONT. voila NOTE change color of image to be bit-mapped BEFORE you convert to bitmap for a COLORED Glow

Dec 19, 2008 | Computers & Internet

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Green Convergence problem


O.K. This is a CRT Projection TV see http://www.tacp.toshiba.com/televisions/product.asp?model=50H82 The Manual is available from http://www.tacp.toshiba.com/tacpassets-images/models/50H82/docs/50H82_om_e.pdf , and this describes the Manual Convergence process, I doubt this will help, but it's step #1. The problem you are describing sound to me like a deflection problem. The electron beam in the green projection 'tube' (a super bright CRT) is probably not being controlled correctly. This can be caused by several things, from least likely to most :) I do not recommend that someone untrained in electronics attempt to service a CRT based television due to the potential for extreme shock or electrocution. That caveat said, here are the possibilities. #1 Physical Trauma: The TV has been shifted moved or bumped hard, and one or more of the fixed permanent magnets used to help convergence has come loose, or the CRT projection tube was damaged. I don't think these TVs use convergence magnets anymore, but it's possible. The green CRT tube failing would be more likely if all four corners were affected, but I've seen a failing CRT affect a single corner/edge before. I believe that this model has projection tubes that are separate from the colored filters, so swapping the tubes around may be possible. I do not have a service manual for this set, and this may be a hazardous operation due to high voltages. #2 Stray magnetic field: Someone dropped a magnet into the TV, and it landed close enough to the green tube to effect it only, or perhaps some other piece of equipment is effecting JUST the Green CRT (clock radio, speaker, badly designed wall wart, etc.). Removing the offending magnetic field may cure the problem. Perhaps the offending magnetic field has been removed, but it's presence is still felt. Try using the degauss function built into the TV set (I can't find one in the manual, but it may be present). You may want to try using a degaussing coil, and see if that helps the problem. Just be careful not to get the coil too close to the base of the projector tubes. #3 Deflection drive electronics: A CRT works by using an electron beam to excite fluorescent compounds on the face of the CRT. To move the electron beam about, a process called deflection is employed. Magnetic coils (the choke) are used to steer the electron beam up, down, left or right. These coils are driven by transistors, and as one fails, you will get an image that starts collapsing in the affected section. On a standard CRT TV, that would mean the entire image is affected, but a CRT projection display uses separate red, green, and blue CRT projection tubes to build the image, so you have three times the deflection, three times the possible transistor failures, and in your case, the odd result of just the green part of the image displaying incorrectly. This problem will probably require a service call, and a electronic board swap, but the problem could be the choke (the magnetic coils) on the green CRT projection tube. Swapping the green tube for another tube could prove if it's the tube or if the deflection electronics that are going out. Again, my feeling is that this is a deflection issue requiring a board swap (I doubt anyone actually does component level repair anymore) Sorry, I don't have a better answer, peace. Paul.

Jan 13, 2007 | Toshiba 50H82 50" Rear Projection...

1 Answer

What are the effects of Adobe RGB?


Adobe RGB enables more vivid color reproduction, for Adobe RGB is capable of more color space than sRGB. It offers more flexibility than sRGB on image processing and image retouching. Please note, however, a normal PC monitor cannot realize the color reproduction effect, for the available color range of the monitor is restricted by its specification. Further, an image with Adobe RGB ICC profile may be reproduced in poor color depth unless color management is provided in advance. Meanwhile, there may be cases that the Adobe RGB effect is realized in printing out, as some colors can be reproduced by a printer.

Sep 15, 2005 | Konica Minolta DiMAGE A200 Digital Camera

1 Answer

What are the effects of using Adobe RGB?


It is possible to reproduce the more vivid color by Adobe RGB because this can obtain more color space than sRGB. At processing image and editing the degree of freedom of Adobe RGB is high. However some colors cannot be reproduced on monitor of PC, and sometimes the images look almost same as those recorded by sRGB. Some cases you can obtain the effects when printing as some colors can be reproduced by printer though the colors which are impossible to reproduce on monitor of PC.

Sep 15, 2005 | Konica Minolta DiMAGE A1 Digital Camera

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Image adjustment functions


SHARPNESS - The function is to adjust sharpness of capturing images. CONTRAST - The function is to adjust contrast (distinction between light and dark) of capturing images. SATURATION - The function is to set color depth of capturing images. GRADATION - In this function, you can select the brightness of an entire image. It is suitable when you want to add a brighter effect to a bright object (Hi Key) and a darker effect to a dark object (Low Key).

Sep 04, 2005 | Olympus EVOLT E-300 Digital Camera

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