Question about Hitachi 42PD9700 42 in. Plasma Television

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Hi i have a 42 pd9700u and i has a 3inch black line down the screen i opened the back and found the ribbon cable loose so connected it and now the tv wont switch on if i disconnect it it turns on what could this be ?????

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Posted on Jan 02, 2017

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lukster
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SOURCE: black vertical line on p42w34p plasma

could be a loose ribbon cable on a buffer board, or one of the buffer could be going bad

Posted on Feb 17, 2007

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SOURCE: black vertical line on p42w34p plasma

The plasma display screen is made of a matrix of elements connected to cables along the side and top. On your unit, some of these many, tiny connections are making contact intermittantly thus losing the elements in that area. These contacts are held in place with just pressure and if that is disturbed, you lose that line of elements. Try squeezing the cabinet of the TV on the outside at the top in the area of the loss and see if that makes a difference. May have to go inside and see if the contact assembly is disturbed or warped or something.

Posted on Dec 31, 2007

  • 1 Answer

SOURCE: Black vertical lines

I have the same problem. My repair shop says I need a new plasma screen. Dell says replacement screens are unavailable. I now have a 42" paperweight.

Posted on Sep 22, 2008

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SOURCE: Black line down the center of screen

I had the same problem to and I fixed it.
At the bottom of the plasma there are six or seven ribbon cabbles that come out of the panel and connect to like driver boards. Each ribbon drives that section of the panel. Mine had it down the centre so I unplugged that ribbon cable and on the underside of a metal plate attached to it there are four big resistors and four small ones. The big ones labelled 100 required resoldering. Once they were resoldered it worked just fine.

Posted on Sep 24, 2008

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SOURCE: black line on middle of screen

Hopefully you still have under warrantee. If not, sorry. This line if memory serves me right is because the tv has 2 picture panels on each side of the TV (they join up together to make one picture). Toshiba did not realize that the panels will start slipping thus creating this fine line from the top of the screen to the bottom. They have revamped the newer models and placed glass to adhere the panels together. Even though my TV was under warrantee I got a new one and have had this one for 1/2 year and now the picture just blew (there is sound but no picture.)
Take your TV back if it is under warrantee.

Posted on Jan 19, 2009

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My samsung tv will only show blue vertical lines. It also shows multicolored lines when i hook up anything 2 it. What would cause this> ?


Hello,

All Plasma and LCD TV have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times resetting the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They an sometimes be fixed, but it is a pain. An yes I have done it, but the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken, Good luck in solving the problem.....

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1 Answer

Vertical blue lines appeared on the screen with no sound.


Hello,

All plasma an LCD TV have boards that control vertical and horizontal output to their respective areas. They are connected to the screen by ribbon cables. If one of these boards fails all together, has a failed chip, a bad connection, or a bad ground somewhere it will result in a black line in the area of that board. A bad ribbon cable connection on the bottom will result in a vertical black bar though the screen. Many times resetting the connection will fix it, if the ribbon cable has been nicked there could be a severed connection. They an sometimes be fixed, but it is a pain. An yes I have done it, but the bar is gone. The same will happen if the chip that outputs to that area opens. The connectors are the first place to look paying close attention to the cable, they are extremely delicate so great care must be taken if you decide to tinker with em, the usually have lift locks that release them, but it is very easy to wreck em. Good luck.

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My Zenith P42W46X 42 inch tv got two black lines vertical lines on the screen the were coming and going away before but they are more stable now.i opened it up and wiggled all the connections arround the...


There are 4 or 5 ribbon cables on the bottom or on one side, they control part of the plasma screen. Check the ribbon cable near the black lines. Unplug the ribbon cable and look for black chips on the underside of it, I think they say 100 on them, you need to resolder both ends on each chip. Should fix the black line issue.

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1 Answer

Have LG 42 inch plasma, 1 inch black line down center of screen, picture good other than black line blocking center of screen, comes and goes sometimes


Sounds like the middle scalar board is defective. Since the issue comes and goes it could just be a loose connection to the between the scalar board and the PDP Module (plasma panel).

Great caution needs to be taken when checking this connection because it is a ribbon cable connection it and needs to be put in correctly aligned or it could cause a short in one of the circuit boards.

Oct 07, 2009 | LG 42LC2D 42 in. LCD HDTV

1 Answer

Phillips plasma tv MDL 42PF9966 Black Line across screen


The ribbon cable to the drive has either came loose of the drive itself went bad. You can open up the back if you are confident and see if adjusting the cable gets the line back. If not you will need to replace the Upper Y Drive.

Thanks
Josh

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1 Answer

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This is an old post but maybe it will help others. You will have to take the back off of the TV. On the bottom you will see ribbon cables coming from the screen and connecting to 3 PC boards. Take the screws out that holds the cable down. Underneath you will see 4 resistors marked 100. All you have to do is re-solder the resistors and your vertical line will be gone. You need to be good at soldering or you could damage the ribbon. The only ones that you have to re-solder is the ones in line with the lines on the screen.

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2 Answers

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same problem 2 inch vertical line in center of screen! could this be something loose in the back??

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1 Answer

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Hi , This is a common fault and easily fixed ,Ive posted some stuff under the hyundai 4240 section, 3 inch black lines , Please go through all the posts as there are links to photos to help you along , Tip , Use a digital camera for log you process so you know where all the screws and cables go , also , lift the brown strip upwards and slide the ribbon cable out ,and do the repair to them all..you understand once you read all the links

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Black vertical line on p42w34p plasma


could be a loose ribbon cable on a buffer board, or one of the buffer could be going bad

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