Question about Sony Grand WEGA KF50XBR800 50" Rear Projection HDTV-Ready Television

4 Answers

Red-striped ghost images.

The set is a couple years old. When it displays images with dark areas bordering light areas, especially with dark appearing to the right of the light, a ghost image appears along the light side of the border. The ghost consists of red stripes that appear stationary relative to the image (i.e. moving images appear to pass by the stripes) but it only appears in the area along these light/dark borders. It appears in HD and SD, as well as signals through different inputs (cable box and DVD player, both connected via component cables). Adjusting the image revision didn't fix the problem. I have the same problem as described by the two previous writers.

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It looks like the convergency ICs are getting weak. These are signs that they are about to fail.
These ICs are mounted on a big heatsink (2 Ics) with the part marking STK392 XXX.
Let me know if you need more assistance.

Posted on Feb 05, 2008

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Red-striped ghost images. - ea7b59d.jpg
Are the stripes u are talking abt look like these? If yes these are called Moiré patterns.
Here's How to fix
them..

  • If your system has a Moiré Reduction Control similar to those in computer monitors, then you can use it to reduce or eliminate the patterns. Just make sure, you write your default settings before you change it.
  • Some folks have gotten electronic fixes (firmware or software) from TV manufacturers but results have been spotty at best.
Slightly defocusing the image via the mechanical focus of your set appears to be the best bet. This has been proven effective in various TVs. Be careful not to over do-it though so that you don't significantly degrade image sharpness.

Posted on Feb 05, 2008

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Hi,

First thing to do is the reset test. I give this a 50/50 chance of clearing it up. Disconnect the power cord for 4 hours. Then when you power it back up the internal soft codes will automatically reset to factory defaults.

If this doesn't solve ur problem then it is a convergence problem. it is a common problem. there is a adjustment in your menu for this. it might be called projector setup on your model. if this does not do it then you need a repair.

Good luck
Please don't forget torate me as fixya..

Posted on Feb 05, 2008

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It must have undergone disturbance due to electronic components in and around the set and when its workload increases i think it is having problems in the display.... do u keep any equipment that is electrically noisy near your TV set like mobile, refrigerator, electric cooker etc....

Posted on Feb 05, 2008

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Pictures appear to be darker than original in print outs.


You can make several adjustments to improve your images such as lightening dark areas, changing the exposure, sharpening blurred edges, and changing the brightness and contrast.
  • Exposure adjusts the overall intensity of light in an image.
  • Adaptive Lighting improves only the dark areas in an image without affecting the bright areas.
  • Brightness adjusts the amount of light in colors ranging from light to dark.
  • Contrast adjusts the difference in brightness between light and dark areas of an image.
  • Sharpness helps define edges and the smoothness of texture in an image. Use this tool to make a blurred image appear more focused.
Adjusting the image Follow the steps below to make adjustments:
  1. Click the View tab and select the image you want to edit by either clicking the image, or by clicking the small box at the bottom left corner of the image. Figure 1: Select the image c00603524.gif
  2. Click the Edit tab and then click the Advanced tab.
  3. On the Advanced tools tab, click Adjust Image .
  4. Select an adjustment from the list on the left. Figure 2: Adjusting the brightness c00603525.gif
    • The Exposure adjustment is automatically applied when the Adjust Image tool opens. Eight variations of the image are displayed on the left. The current image is displayed in the center. Each image represents a different level of adjustment. When you move the pointer over any of the images on the left, a large version of the image is displayed. Use Preferences to turn this large image preview on or off and to set the timing for the display.
    • If you want to use a different adjustment tool, select Adaptive Lighting , Brightness , Contrast , or Sharpness from the list.
  5. Select one of the images on the left.
  6. Do one of the following:
    • Click Accept to accept all changes and exit from the Color Toolkit.
    • Click Cancel to discard all changes and exit from the Color Toolkit.
  7. If you have finished modifying the image, do one of the following to save your changes:
    • Click Save to overwrite the original image.
    • Click Save As to save the modified image with a different name.

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2 Answers

Shadowing


GOOD DAY ND GOOD LUCK;

TRY THIS, IT WILL CORRECT CONCERN:

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:
  1. Access I2C Menu. (See page 57 of the Service Manual).
  1. 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.
03b_ghost_image01.gif Figure 1
  1. 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.


  1. Using the Remote Control joy stick, scroll down to next page (see Figure 2) until LCD ADJUST is highlighted.
03b_ghost_image02.gif Figure 2
  1. Move the joy stick to the right to cursor right once. The next page will appear with the word GHOST highlighted.
  2. 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).
03b_ghost_image03.gif
Figure 3

  1. 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.
  2. Once you get the square to look good without ghosts, press "SELECT" to save any data values that have been changed.
  3. Press the "EXIT" button three times to return to normal picture.
  4. Adjustment is completed
  5. I HOPE THIS WAS HELPFUL, big IRISH.




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3 Answers

Red ghosting on images that are not closeup


1. Power off -- let bulb cool.
2. Display - 5 - VOL+ - Power (in quick sequence) to display service menu.
3. Go into the user menu and set auto revision back to auto.
4. Put an image on the screen that shows the problem. I always found the edges of a 4:3 aspect ratio signal displayed the ghosting very well on my set.
5. Use 2 to scroll through the categories to find D GM TG
6. Use 1 to scroll through items in D GM TG to find V POS D
7. Write down current value.
9. Use 3 and 6 to change the value to minimize the ghosting. You should only need to move it up or down a value or two.
10. Press Mute - Enter to save the changes.
11. Power off and let the bulb cool.

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1 Answer

Red-striped ghost images.


when you leave your TV (no matter what kind) and you leave it for long periods of time on a static image or something.. the image tends to burn in to the screen... so changing the glass would be a way to fix it.... the problem is that that kind of repairmen is more expensive and difficult than buying a new set...

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Sony 3LCD rear projection ghosting


sorry to inform you my friend but a lamp wont fix your problem. i afraid you will need an optical assy. this part is fairly expensive

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DARK HORIZON AREA AT TOP OF SCREEN


not sure but you could have a bad color wheel i would suggest a service call from your local shop

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