Question about Samsung LN-R409D 40 in. LCD Television

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Samsung 40" LCD HDTV

I have lines about 2-3 inches thick that scroll from the bottom of the screen to the top.

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Re: Samsung 40" LCD HDTV

Sounds like a different source is the problem, start by eliminating each source hooked to the set, I have seen cable boxes do this, see if it does it on a dvd

Posted on Mar 17, 2007

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I bought an LCD Samsung 3 years ago and about a year ago a thick black line appeared in the middle of the screen. Can this be fixed at home?

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Parts: try or Ebay

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1 Answer

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1 Answer

Samsung 40 inch LCD takes longer and longer to turn on, 5 minutes now, screen black with light under name on; once on line defects appear on screen. Sometimes when turns on only random lines instead of...

common problem you have a bad cap or 2 in your power board this board is the one where tour ac cord plug into these can like caps will be puffed up on top the values are written on the sides on the device replace them and your good to go

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2 Answers

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Hi, Depeending on the thickness of the lines matters. If the lines are Black and about 1-2 inches thick it may be a bad bottom buffer board or a bad panel (screen).
If the lines are thin 1/16 to 1/8 inch it is most likely a bad panel.
You can open up the set and depending on the model, see the thin board/boards running across the bottom with ribbon cables going to the panel. You may be able to attempt reseating the ribbon cables, but be careful as some retainer plugs break very easy.
If the lines are thick black and the reseating doesn't correct it you may be able to buy the coresponding buffer. Unfortunately some bottom buffers are actually part of the panel. If you are not comfortable taking it apart then call a professional but be aware labor charges start around $200 not counting parts, panels start at $600 up to over $1000
hope this helps

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IF LCD TV has vertical lines try cleaning T-con board to lcd panel cable or replaced t-con board

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3 Answers

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Try to replace the YSCAN board. If not fix it, then it's the PDP Panel failure.

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This maybe the symptom of a bad Panel. One Vertically This line is 99% bad panel. Call your warranty provider or SONY tech support if purchased under 2 years.

Best regards

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