Question about Sony PFM-50C1 50 in. Plasma HDTV

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There are black lines runnin vertically on my tv. theyre bout a 1" wide & run 1/2 the screen. 6 on the top, 1 on the bottom.

The tv was given to me, so i dont mind working on it. im good with an iron, just need to know where to start. can any1 help please?

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  • scot Jan 01, 2013

    i do have the service manuel

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

vinnyq
  • 157 Answers

SOURCE: Hello! I have a problem with my kdf-e50a10 sony

This is caused by a failure of the optical block of your TV. The only way to fix the issue is to replace the whole optical block which is very expensive ($1000+) and time consuming (need to take whole TV apart to replace the part).

The optical block in your model had inherent issues and there is currently a class action lawsuit pending against Sony for this issue. Up to date information reguarding the lawsuit can be found here: http://www.sonya20tvclassaction.com/main/home.sfx

Posted on Oct 07, 2009

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JoeO700
  • 80 Answers

SOURCE: Vertical Black line on display

Rakesh, You have a "dual scan" panel, this is why the line only decends down the screen half-way. This could be a connection problem on the buffer board which causes loss of the drive signal only to that part of the display which it is connected to. The vertical address buffer will be located on the top rear of the display, use great caution in inspecting these cables and connectors. If the integrity of the cable and connector is good the panel itself may be bad due to the drive IC being located on the ribbon cable attached to the panel body. this is better known as COF or, chip-on-film technology. I hope this helps you. Good luck. Joe Weibel CustomElectronics.Org

Posted on Apr 24, 2007

  • 2 Answers

SOURCE: Vertical line on TV

usualy this problem is cause by the lcd drive board.

Posted on Oct 24, 2007

mistersony
  • 320 Answers

SOURCE: Lines on tv screen

Both sound like bad LCD panels. The following must be answered to confirm this:
Do the lines appear on all inputs/all signal sources?
Can they be seen in the OSD/menu?
If yes to both questions, it is likely that the LCD panel is bad

Posted on Oct 20, 2008

  • 68 Answers

SOURCE: Permanent Vertical Line on my Sony Bravia 46 inch LCD TV

What you're describing is usually the result of an improperly seated connector. With the power disconnected, open the tv and locate any connectors between the LCD screen and the driver circuit board. Unplug them, and reconnect it assuring it's properly and firmly seated. Be careful when handling these cables as they tend to be quite fragile... take your time.

Posted on Nov 28, 2009

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