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Rick
Rick Posted on Oct 30, 2012
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Horizontal red and blue lines - Panasonic Viera TH-42PX80U Plasma TV

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The Knight

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  • Panasonic Master 76,851 Answers
  • Posted on Oct 31, 2012
The Knight
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Visit the site named 'Electro-help' for more details. Click this link. View it in "Timeslide" option, which can be selected from the drop down box menu by the [Sidebar] tag, at the top left corner of the display window. It will make search easy. There are more than 1100 posts to different brand TVs now. Pull up older posts there. Search the site with patience.

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Blue & red horizontal lines in plasma tv
If you wish to get some details; check the site linked here. Pull up older posts. Surf the site with patience.
http://electro-medical.blogspot.com/
http://electronicshelponline.blogspot.com/
Line, faults & possible causes to both Plasma & LCD screen are given with illustrations. You can get an idea about the fault to an extent.
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Jan 18, 2016 • Panasonic Viera TC-P50G25 50" Plasma TV
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How to set convergence on Projection TV ' s
I have given an general explanation on most projection TV ' s

  1. Enter the menu on your TV. Use the remote control and bring up the menu.
  2. Choose "Convergence." This may be under "Picture Settings," "Function" or "Advanced Options."
  3. Select a color. You will have red, green and blue to choose from. Do each one, starting with red.
  4. Press "Enter." A crosshair pattern will appear on your screen.
  5. Adjust vertically. If there is a horizontal red line visible, press the up or down arrow keys (or channel up or down) to adjust the convergence until the line is superimposed on the horizontal-center line of the white crosshair.
  6. Adjust horizontally. If there is a vertical red line visible, press left or right (or volume up or down) to adjust horizontally. Do this until the line is superimposed on the vertical line of the white crosshair.
  7. Save settings. It is important to save your settings when you are done, instead of simply exiting the menu.
  8. Repeat these steps for all colors.
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Sound like your Y-Sustain board has one foot in the grave. The Y upper buffer and Y lower buffer boards go when the Y Sus Goes too...
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Red and Blue Tube screen drive controls needs to be turned down some, tubes are over driving causeing drive lines.
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my sharp tv was like that to but our tv color was blue with also gray horizontal lines i did cheack all d caps resis... etc dont know what to do LoL.
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replace the main digital pcb.
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Sounds like the green is out of focus. If the focus control for the green does not control it enough to make the width the same as the red, then, the lens on top of the green can be adjusted to focus that tube. On the lens, there is a wing nut on a screw to loosen it and move the lens left or right a bit to help with the focus. Hope this helps.
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The video controller circuit may be going sourer. The replacement could be more expensive than a replacement monitor.
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