Question about Samsung PPM50H2 50 in. Plasma Television

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A 12" high by 4" wide block of colored vertical lines in middle of screen

When an image is on the screen, this block of vertical lines appears in the image in red, green and blue colors. I am seeing it on all inputs: video, s-video and component and from all sources (cable, satellite and DVD) so I think it must be in the TV circuitry.

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Re: A 12" high by 4" wide block of colored vertical lines...

I have the exact same problem as sal1965. Does anyone know which circuit board may have a problem?

Posted on Oct 07, 2006

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How to Troubleshoot Vertical Lines on an LCD TV Screen

<p>There are two prevalent formats for video programming: full screen and wide screen. LCD TVs are designed to show a wide screen picture to go with high-definition (HD) programming. When standard-definition (SD) programming is watched on an LCD HDTV in its default settings mode, there will be two vertical lines on the right and left sides of the picture. You need to go into your TV settings menu to troubleshoot this issue.<br /> jQuery('.intro .thumbnail').each(function(i,e){ jQuery(e).find('img').one('error',function(){ jQuery(e).remove(); }); }); <span><br /></span> <span>Instructions</span> <ol> <li> 1 Press the "Menu" button on your remote control and open the "Picture Settings" sub-menu.<br /> </li> <li> 2 Select "View" from the list of options.<br /> </li> <li> 3 Choose a viewing mode that will eliminate the vertical lines. Select "Zoom" to crop the on-screen image to fit the screen. Select "Wide/Widescreen" to stretch the on-screen image to fit the screen, or select "Panoramic/Panorama" to stretch the sides of the onscreen image to fit the screen (recommended).<br /> </li></ol>

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Red line down middle of television

Try putting a litte pressure on your screen where the red line is,if it goes away then check for a loose pin connection where that line was...

Sep 19, 2011 | Vizio P50HDTV20A 50 in. Plasma HDTV

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I got multiple thin colors on the middle of the screen

My 3-year old 52-inch Toshiba flat panel TV (Model # 52RV53U, Serial # AM409000295) developed a display issue (purchased Aug. 2008, manufactured July 2008). Vertical multicolored lines appeared on the screen just left of center. The band of thin vertical bars is 5.5 inches wide. The lines are about 1/16-inch wide. They are stationary, always exactly in same place. They over-ride any other picture on the screen (no transparency). They are there all time even with no video inputs to the TV after the unit is turned on. See picture #1. The TV works well in every other respect, but, obviously, it is annoying to watch the picture with the color band blocking about 1/6 of the picture.

Further info, pics, comments, and updates on my Facebook page at

I already swapped out the TCON board with no improvement and replugged the TCON board cables with no improvement.

Most likely it is the flat panel tab bond failure (panel made by Samsung). Further updates will be on my Facebook page.

Aug 17, 2011 | Toshiba REGZA 52RV530U LCD TV

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How i adjust horizontal size and vertical size

To answer your concern, all you have to do is to change the setting of your aspect ratio on your TV.

Here is my suggested way to procede:

1. Apply 1080i signal, which should produce an oversized HD image on ColorStream1or 2.
2. Select an HD channel that is broadcasting standard 4:3 image, not wide screen.
3. Switch to the Service Mode ( Please refer to the above links). In the Service mode, press channel up/down to find the Adjustment parameters needed for the following steps.

4. Adjust HIT with volume up/down control for the image height to 22.5 inches.

6. Adjust WID for image width of 30 inches, (22.5*4/3)
7. Adjust HPOS to center the image.
8. Adjust PARA and TRAP to minimize geometric distortion.
9. Switch into Convergence mode and Adjust VLIN to get equally spaced horizontal grid lines.
10. Measure the length of the central grid lines and note the number of horizontal and vertical grid lines. This information is used to create an overlay grid.
11. Create the overlay grid on 40x25 x0.003 inch clear Acetate sheet, which you can get at the Art Supply store for under $2. Draw the grid with a fine line erasable pen. Draw vertical and horizontal lines through the center of the sheet so that the lengths are the same as the central grid lines. Now draw the grid so that it has the same number of lines as the convergence grid but are equally spaced, with the outer ones at the ends of the central lines.
12. Cut off about 1/4 inch from the right side of the sheet so that the sheet can lay flat against the screen, which is slightly less than 40 inches.
13. Put a reference mark on the TV frame 2.5 inches down from the upper left side of the screen.
14. Place the overlay on the screen so that the upper edge lines up with the reference mark. The overlay sticks by electrostatic attraction.
15. Use convergence controls to remove grid distortion and converge grid colors. Refer to the Anamorphic link for details.
16. Enjoy 1080i.

Other Comments:
I didn't realize I could create the overlay grid before placing the Acetate sheet on the TV screen, until I finished drawing the grid with the sheet placed on the screen. I added grid lines as called for in the procedure. I'm sure this method took much longer no only to draw the lines but some of them were difficult to see.

Part way through the convergence procedure, I became concerned that the image width was off since I did my screen adjustment with wide screen image. Thus, I decided to repeat that step with a 4:3 screen.

I confirmed the need to press 7 often to save results since after I adjusted one grid color without it, I accidentally hit a key that switched me out of convergence mode and when I switched back, all settings were gone.

Another mistake I made was not realizing that the cursor color determines which grid gets moved.

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Hi to Azraelsrl and the whole gang -- Got a Toshiba #52HM84 upon which we get a screen that is wholly full of vertical lines that are each about 1/4" wide, and the spaces between these lines are...

Do these lines appear in a particular color like red/gree/blue or all? Please upload an image to
After the upload completes, click on the image, click view full size, copy the link and paste it here so that I can have a look

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