When we turn the TV on it works for a minute then then white ghost like shadows flicker around the images and the TV shuts off. Our TV began shutting off a couple of months ago. The amount of time it would stay on became shorter. When it shut off all three (timer, lamp, standby/temp) indicators flash. Replaced the lamp and color wheel.
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Re: White shadows and shuts off
it is the problem of Convergence. Replace the convergence ic's contact the manufacturer to replace the parts. Most of the TV have come with the problem of convergence. You can also check thoroughly the power supply board.
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Sounds possibly like image retention. If you watch the same channels often any recurring text, logos, or graphics, especially white colored, can ghost on the screen.(playing the same videogame for a long period can also have the same effect) Watching other programs or channels will cause the ghosting to disappear.
To prevent image retention you need to activate the TVs anti image retention mode(Called ISM Method). On Zenith and LG (the manufacturer of Zenith T s) plasma TVs open the TVs menu, select the Option section (picture of a briefcase with a wrench). Select ISM Method and change it to Orbiter, this is reccomended if you watch programs or channels (or play videogames) that have still images for long periods of time. It moves the image a little every couple minutes.
If watching others channels or programs doesn't make the image disappear, change the ISM Method to either Color Wash or White Wash (don't use White Wash frequently, it over excites the plasma gas and can shorten the life of your TV if overused) for a few minutes and then return to Orbiter.
Projection TV sets are known to have two common problems. The first problem that is common to these sets is convergence failure. When this happens the TV will usually look 3D, Wavy/Distorted, etc. It may also shutdown and blink an error code.
The second common problem with Projection TV sets is dull video, halos around objects, white looking video, or red overpowers the screen. This is commonly caused by the fluid in the lens being clouded overs.
You can find more details and solutions here on Fixya at the following link below. Or click HERE
Do you have any speakers or magnets next to the tv? If so, that is not good. It may be a convergance issue. Check to see if you have any adjustments on the back of your tv to adjust picture. If not, if may be a faulty capacitor that needs to be replaced
YOU ARE EXPERIENCING THE EFFECT OF GHOSTING. iT CAN BE FIXED
cREATE A 1200X1600 100% WHITE .GIF TO USE AS A SCREEN SAVER. (IN WINDOWS YOU CAN ADD IT TO MY PICTURES SLIDESHOW)
Set this slide show to run after 2 minutes of non use. Set the nonitor to power off in a short amount of non use. say 15 minutes. Do that for a couple of days and the ghosting affect will go away . You can then turn to a more reasonable screen saver.
I received this information from www.beginnercode.com
50V500 ONLY GHOST: May be described as "Out of Convergence" but ghost is still attached to main image. CONDITION: A "ghost image" appearing to the left or right of images in the picture.Can be varying shades of a primary color (red, green, or blue) as well as gray.Can easily be seen in the 4 x 3 mode, at the edges of the picture. CORRECTION:
To correct the problem, please do as follows:
Access I2C Menu. (See page 57 of the Service Manual).
To enter the I2C Service Menu, with power off, (on the front control panel) press and hold the INPUT button. Then press the POWER button for two seconds. The following Service Menu will appear.
BEFORE CONTINUING: CONFIRM THAT THE R, G and B DRIVE ARE SET AT 40.
Be sure to press SELECT after each change to SAVE the new Data.
Using the Remote Control joy stick, scroll down to next page (see Figure 2) until LCD ADJUST is highlighted.
Move the joy stick to the right to cursor right once.The next page will appear with the word GHOST highlighted.
Cursor right again, and a white screen will appear with a BLACK SQUARE in the center, as in Figure 3.You will see LCD ADJUST, followed by “SHP” and a number (value).
If the unit is out of adjustment, you will see a gray ghost on either side of the black square. Move the joystick to the right or to the left until the ghost disappears. The number values will change up or down.
If the ghost adjustment is off with a lower value, there will be a ghost to the left of the square.
If the ghost adjustment is off with a higher value, there will be a ghost to the right of the square.
Once you get the square to look good without ghosts, press "SELECT" to save any data values that have been changed.
Press the "EXIT" button three times to return to normal picture.
I'm going to guess that these ghosts are of different colors too. This is most likely a convergence problem. Try resoldering the pins on the convergence ICs first. If that fails, replace them.
These ICs are large and black, attached to a heatsink. They will be marked STKxxx.
Keep us posted.