Question about Mitsubishi VS-55705 55" Rear Projection Television

1 Answer

Vertical lines jumping across screen

I have vertical lines jumping across the screen as if the vertical hold was not working. I also have a double image.

Posted by kirk sine on

  • 2 more comments 
  • gloriajt Nov 04, 2007

    vertical lines jumping across screen. When I turn off tv or change channel, picture will clearn for about 1 second.

  • gloriajt Nov 04, 2007

    I have verticle lines jumping accross my screen. When I turn the channel or turn the tv off and back on, it clears for about 1 second.

  • Anonymous Mar 16, 2014

    White vertical lines across screen

  • Reg Morton
    Reg Morton Apr 16, 2014

    Where are these ICs located in a WD57831?

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Anonymous

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  • 3,130 Answers

If the double image is in a differant color, then its your convergence IC's that need replacement. This is not a job for the unexperienced person. If you have no electronic repair experience, please seek out a pro to assist you in this repair. There are two IC's, about 3"X5" that are black in color and have STK with several numbers following them. Good Luck PS please dont forget to rate this thread.

Posted on Nov 03, 2006

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I have a Sony KF-42WE610. It has developed evenly spaced lateral lines across the picture (double the lines for Hi Def). Looks like a tube television that needs the vertical hold adjusted. The screen...

If you wish to get some details; visit the site linked here. Pull up older posts.
http://electronicshelponline.blogspot.com/
Line faults & possible causes to LCD & Plasma screen are given with illustrations. You can get an idea about the fault to an extent. Faults to all LCD & Plasma screen are similar, irrespective of its brand and screen size.
Search the site by type in the "BRAND NAME" of your device; (Exclude the model number), in the "Search box at the top right of the display window of the Homepage" to get gathered related posts
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Hello,

IF YOU HAVE A SOLID BLACK LINE RUNNING VERTICALLY THEN YOU HAVE A FAULTY MATRIX INVERTER. IF CENTRAL THE MAIN VERTICAL INVERTER NEEDS CHANGED. LEFT = LEFT VERTICAL INVERTER RIGHT=RIGHT.........

ANOTHER WAY TO GET THIS FAULT IS WORN OR DAMAGED RIBBON/PLASTIC GOING FROM THE SCREEN MATRIX TO THE INVERTER

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Hello What type of TV do you have, analog or digital? If you have an analog TV and the screen is rolling it is the vertical hold. Because the vertical hold operate on 60 cycle which the same as AC line cycle. The 60 cycle in the vertical hold is as a oscillator or timing circuit. When the TV pick up the image for the NV devise, they just don't mix. Why, because image intensifier tube in the NV devise is operation at 25 to 50K Hz or cycles. The vertical hold circuit pick up on the 50K Hz signal which mixes with 60 cycle timing circuit causing the screen to rolling with lines across the screen @ 60 cycles. Digital camera and digital camcorder with digital TV will help, or a image inverter that takes this 50k Hz signal and covert it to some that analog TVs can use. GB...stewbison
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