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I was watching tv when the picture went blank. i am now looking at a black screen with a fine orange line running horizontally accross the middle. the sound is ok

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This is an easy repair if you've ever soldered and would not be too costly for a repair shop to do it for you. The problem is a bad Vertical Output IC (usually mounted on an aluminum heat sink with the part on it labeled LA78?? ) and 1 or 2 bad capacitors. Some times you can even fix the problem by re-soldering the contacts of the IC- To find the IC follow the 4 wires that come from the Yoke (which is a contained coil of wires slipped over the neck of the picture tube(s)) back to the board. 2 of the wires go to the horizontal o/p and 2 to the Vertical o/p the thinner gauge wires are for the vertical.

Posted on Sep 27, 2009

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Posted on Jan 02, 2017

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1 Answer

Tv screen is black except for 1 horizontal line of color


The line is there because the vertical deflection unit - the one that spreads that line across the entire screen to form the image - has failed. Replacing it is a job for a professional, or at least an experienced amateur, and the parts will be quite difficult to find for such an old tv . 

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The blob is a phisically damaged part of the LCD screen. Unfixable, the screen must be replaced and it will be expensive.

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2 things that will cause that vertical IC or Yoke! Listen to this one went on service call 2wks ago Customer had a 50 INCH1988 pioneer big screen replaced 3 capacitors resolder poor connections TV is now working like New ?

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No picture no sound


Did you mean the picture is collapsed only in the middle horizontally(white line appears on the middle part of the screen)?
If that is the case, maybe vertical IC failed or loose connection.

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I have a black line accross my LCD t.v. screen


if it is a thin black line then it is probably a line of pixels out. if this is the case, the whole screen will have to be replaced and that can get pricey. i would suggest that you get it checked out by a tv tech and get an estimate, but it'll probably be cheaper to just get a new one

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Picture reduced to 1/4 on a black screen


Picture is reduced to a straight horizontal line across the center of the screen.

Aug 17, 2008 | Televison & Video

1 Answer

Problem with tv


Could be a horizontal output fault, faulty power supply, a simple dry solder joint or HVT. If you can hear arcing or smell an ozone odour, it will be the HVT which may cost a bit.

Without knowing the actual cause, it's impossible to say how much it would cost to fix it.... could be anywhere from $50 to $250 etc

Best to have it checked by a technician and get a quote to repair... then decide if you think it's worth it.

Toshiba is generally a reliable brand, so if you were happy with the picture quality before the fault occurred, it's probably worth repairing.

Cheers

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Thin white dashes on top of screen is PERFECTLY NORMAL. It is nothing wrong with the TV, it is the broadcast. What you are seeing is the very bottom of the timecode running. It doesn't happen all of the time or all channels. It usually happens with old 4:3 commercials predating "Digital TV." This is mentioned in your Users Manual. You should be able to adjust the horizontal/vertical position in the menu settings.

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1 Answer

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Not to me, but it also depends on if you could do this yourself or not. And the area you are in sometimes is responsible for the cost being high.

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