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UN40D5005 shows black/white horizontal lines across top 3-4" of display.

My UN40D5005 has been slowly degenerating - it started with an intermittent band of horizontal white lines across the top few inches of the display. It has now gotten bad enough that the top 3-4" of the display are gone - a mix of white and black lines obscures the picture. I assume this is a logic board issue... Any ideas? Thanks.

Posted by Anonymous on

  • Anonymous Aug 19, 2017

    any luck? this just happen to me today

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6 Suggested Answers

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Posted on Jan 02, 2017

Mike1963
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SOURCE: WHITE LINES

Replaced C407 100uf/35V Vertical section.

Posted on Mar 04, 2008

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SOURCE: Dozens of horizontal lines across display!! HELP!!!

Bring up the menu and if the lines are not on the menu replace the small signal board that is your video prossor. If the lines are still the replace the Y main board that contrl the top half of the screen.

Posted on Aug 20, 2008

  • 1 Answer

SOURCE: Horizontal white lines across top of TV screen

Vertical hold circuit is failing.

Check capicitor in vertical hold circuit. You should have solid knowledge of electronics repair before attemping repair. TV's can emmit harmful radiation, and produce voltages up to or in excess of 30kV.

Posted on Nov 09, 2008

  • 231 Answers

SOURCE: Hitachi Plasma very thin bleeding horizontal lines

very possible the YSUS board is going bad .If YSUS is going bad .I would also replace XSUS board since they are same age..Also whenYSUS is replaced make sure you make pot ajdustments as old YSUS and also with XSUS board

Posted on Aug 26, 2009

  • 1 Answer

SOURCE: Horizontal white lines across top of TV screen

Hi I had the same problem. Broken white lines across the top of the screen. This is called overscan. You need to go into the Setup menu, other settings. 16:9 overscan needs to be on. Hope this helps.It solved our problem.

Posted on May 23, 2010

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