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I have a Samsung Plasma TV model PN50B550T2FXZA that has a thin horizontal line along the bottom of the screen. I've replaced the Y-Buffer board and the Y Main Board but no improvement. What's next?

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Posted on Jan 02, 2017

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SOURCE: Samsung Plasma 42" TV Screen problem

panel migth be bad, connection/connector on it might have loosen up already! it it has a warranty then return it at once and ask for a new one! its what you've paid for.

Posted on Nov 18, 2007

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SOURCE: Samsung 42" Plasma-SPN4235 screen problem

the panel itself has failed

Posted on Dec 01, 2007

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SOURCE: JVC PD-42DX6BJ plasma 42 inch black horizontal lines over the pic

Here's a link to order the original the JVC upper Y-buffer board and lower Y-buffer board for this model from a major parts distributor if needed:


JVC "PD-42DX6" Replacement Part Upper Y - Buffer Board (LJ41-02760A)

JVC "PD-42DX6" Replacement Part Lower Y - Buffer Board (LJ41-02761A)

Based on the symptoms: It is possible that the Y-buffers are faulty, which may require the replacement of the Y-sus board as well. You may want to get a local technician to diagnose the unit and provide a second opinion.

Posted on Apr 01, 2009

  • 1779 Answers

SOURCE: Samsung HD 42inch TV Model No. PS42S5H Y Board

Your board numbers should start with LJ92. They will cross to both Samsung and LG. Oh, your model number goes nowhere, double check it.

Posted on Aug 25, 2009

  • 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

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Hi have a samsung 42 inch plasma, all of a sudden it has a band 20cm wide of dotted lines going across the whole screen, some channels or when playstation in use the band gets wider, does not seem to...


if the band is horizontal your tv has bad y-buffer board. Usually there are 2 buffer boards- top and bottom. if the problem is in the top half of the screen replace the top board, otherwise replace bottom board.
but better to replace both a the same time.

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I have a single thin horizontial black line six inches from the bottom of the screen. how can it be fixed.


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The line is probably in correspondence of the low Y buffer board, located inside the TV and connected to plasma display. In that case the board must be replaced to fix the problem. One of the symptoms of a defective low buffer board is a black line that starts from the bottom of the TV.

Regards.

Ginko

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JVC "PD-42DX6" Replacement Part Upper Y - Buffer Board (LJ41-02760A)

JVC "PD-42DX6" Replacement Part Lower Y - Buffer Board (LJ41-02761A)

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