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Vertical jumping may have a vertical hold issue, horizontal may have a horizontal hold issue. Most older tv sets will have some knobs or adjustable screws for vertical and horizontal hold. Turn your set on and check for these knobs on the back of your set and adjust until your picture is in as well as you can get it
this is most likely a problem with a capacitor going back in the horizontal stage of the tv's circuit. if the tv has a horizontal knob on the front somwhere you may be able to expand the width of the picture for while but eventually the problem will continue in which case if you know someone who knows how to replace electronic components the bad capacitor(s) will need to be replaced or the tv will have to be replaced.
Hi, Its because of Over Voltage of Screen (G2) to Blue CRT. Take off front lower cover (speaker grill) and unscrew board. There you will need to find Focus Block mounted having 6 control knobs. 3 knobs are for Focus control and 3 are for Screen volts control. Find Blue Screen control knob and turn is Counter Click Wise slightly until bluish shade disappear on screen including few blue horizontal lines. If you select AV input to adjust that will be fine as you do not need to wait for dark-scene.
As long as you only see these artifacts while watching certain broadcasts, the TV is fine. If these lines are present no matter what you are watching, then you have a problem. What you are seeing is signal related and there isn't much you can do to fix that. Think of it like a scratched DVD; you will see strange things on the screen at times and many think it's the TV when it's only the signal from the device to the TV that is corrupt.
I have thought of one possible solution and this will depend on your TV's ability to slightly stretch the picture in vertical/horizontal directions. If your TV will let you, you may be able to raise the top of the picture a cm or so to hide the flickering. Check the TV's onscreen menu for anything to do with picture alignment. This is nothing to do with aspect ratio though so ignore that.
you need to adjust the screen voltage. behind the front grille and inside cover. a small black box 6 adjusters protruding from it. only adjust the the color counterclockwise that matches the problem in this case it's the green so look for the knob with "G" marked by it. there are 2 with "g" marked by them the row across the top of the box are for focus don't adjust. back the knob off untill the raster is blank with your input set to an inactive input, the picture should be blank and black.
when it is you have the adjuster close to where it should be, now change the input to an active signal and turn the color off so that you wil have black and white picture. adjust that knob untill you do have a truely black and white picture not too green or red or blue. go back to inactive video input and check that there are no lines of any color on the screen. repeat if needed. always adjust these knobs slowly the set will be watching you ! if your autofocus won't work now you have the adjustment set too low. check this function before putting back together again. these adjustments can be real touchy so be patient
Found some relevant info on how to adjust your video settings... You might want to give it a try!
4.12 PC Input Picture Adjustment
The Picture Adjust menu operates in the same
way for the PC Input as for the DTV / TV input in
section 4.2 for Backlight, Contrast, Brightness and
Color Temperature. 4.12.1 Auto Adjust
When the MENU button is pressed, the On Screen
Display (OSD) appears on the PICTURE ADJUST
page. Press the button to highlight the Auto
Press the button for the LCD HDTV to adjust to
the PC signal timing automatically. 4.12.2 H-SIZE
Press the button to highlight the H-Size selection.
Press the button to start adjusting the horizontal size of the picture. Use the or button to adjust
the horizontal size. 4.12.3 Horizontal Shift
Press the button to highlight the Horizontal Shift selection.
Press the button to start adjusting the horizontal position of the picture. Use the or button to
adjust the horizontal position. 4.12.4 Vertical Shift
Press the button to highlight the Vertical Shift selection.
Press the button to start adjusting the vertical position of the picture. Use the or button to adjust
the vertical position. 4.12.5 Fine Tune
Press the button to highlight the Fine Tune selection.
Press the button to start tuning the to the PC signal. Use the or button to adjust the tuning
4.14.1 Understanding Viewing Features
Your LCD HDTV features four viewing modes and Picture-In-Picture (PIP)/Picture-by-Picture (POP) mode.
You can switch viewing modes using the remote control. 4.14.2 Viewing Modes Normal Mode
The original 4:3 aspect ratio (1.33:1 source) is preserved, so black bars are
added to the left and right of the display image. Standard TV broadcasts are
displayed with a 4:3 Aspect Ratio. Movies in 4:3 Aspect Ratio may be referred
to as pan-and-scan or full frame. These movies were originally filmed in 16:9
(widescreen), and then modified to fit a traditional TV screen (4:3). Wide Mode
When watching a standard broadcast or full-frame movie in this mode,
the display image is stretched proportionately to fill the TV screen.
When watching a widescreen (1.78:1 source) program or movie, the
display image fills the TV screen. If you are watching a widescreen
(1.85:1 or 2.35:1 source) program or movie, there will still be black
bars at the top and bottom. Zoom Mode
When watching a widescreen (1.78:1, 1.85:1, or 2.35:1 source)
program or movie, the display image is zoomed proportionally to fill the
width of the screen. The top and bottom are cut off to remove most of
the source material’s black bars. This mode is good for programs or
movies with sub-titles. Panoramic Mode
When watching a standard broadcast or full frame movie in this mode,
the 4:3 Aspect Ratio (1.33:1 source) display image is stretched
horizontally on the left and right sides to fill the TV screen. The center
of the image is not stretched.
Note: Viewing modes are saved based on input. For example, you lasted watched a DVD in widescreen mode and then watched TV in standard mode. When you switch back to DVD input, the viewing mode will return to widescreen.
Before you attempt any repairs, it is necessary to make a test. The results of this test will determine which part may need replacing. Please follow the directions.
In short, you will be doing the following:
Perform Memory Initialization. NOTE: You must write down some data values before performing initialize. (See Below for Procedure).
Check this status of the picture. (See Status after Initialization)
The status will determine what part need replacement.
BE SURE TO COPY DOWN DATA SETTINGS BEFORE INITIALIZING I2C SETTINGS: (See Below)
Select a non-used or blank Video input or tuner to get into I2C menu, also make sure the Power LED on the Front of the set is not blinking at all.
Enter the I2C Service Menu, be sure the power is OFF.
On the front control panel, press and hold the INPUT button.
Then press the POWER button for two seconds.
You may keep the INPUT button depressed until you see the OSD with the Service Menu displayed.
If you don't see the service menu, please repeat Process making sure you wait until the Power blinking LED stops.
(02) COPY DOWN THESE SETTINGS: IMPORTANT: The following are Service Adjustments. These Data Values are lost when Memory Initialization is preformed. It's important to write the values down before proceeding. H Position: ________ V Position: ________ LCD ADJUST (NOT LCD DRIVE) (Arrow right) GHOST (Arrow right)>LCD ADJUST=SHP:_______ (Press Select)LCD ADJUSTGHOST=R:_______ (Press Select)LCD ADJUSTGHOST=G:_______ (Press Select)LCD ADJUSTGHOST=B:_______ (Press Select, then Exit) V COM (Arrow right)>V COM-R:Set For Minimum Flicker (Press Select)V COM-G:Set For Minimum Flicker (Press Select)V COM-B:Set For Minimum Flicker (Press Select, then Exit) NRSH (Arrow right)>VS-DAT 1 through 9:_______, _______, _______, _______, _______, _______, _______, _______, _______ (Press exit twice) .
Check to see if you can find horizontal and vertical sync controls. These would typically be small knobs or screwdriver adjustments on the edge of a circuit board or at the back of the monitor chassis. Try adjusting the vertical sync....rotate the knob back and forth two or three times to "clean" it...then adjust to see if you can get the picture to settle down.
Aging electrolytic capacitors are the most common cause of symptoms like this. You'll need the assistance of an experienced electronics technician to find the exact source of the problem.