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Green line in middle of tv when switched on - Panasonic Televison & Video

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Is there a picture with the green line going through the centre. If it`s just a green line with no picture, it sounds like the Frame (Vertical scan) Output IC has failed and possibly the safety feed resistor near the LOPTX. The reason why it`s a green line is to protect the tube from phosphor damage. The older TV`s would produce a VERY bright white line across the screen which could burn the phosphors withing the tube if left turned on in that condition. It`s not an expensive repair, but is it worth it with the price of Modern TV`s nowadays. If there is a picture with a green line, it may be due to phosphor damage, in which case, it`s a new CRT (tube). Ian

Posted on Jul 15, 2009

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Posted on Jan 02, 2017

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60inch lg plasma green line down the middle


Visit this site named 'Electro-help' These type of fault to plasma TVs are described in detail there. Almost all plasma TVs will have same structured circuits. You can find which board to your TV is faulty, by referring details from this site. Check this link, and select the site named above. Pull up older posts there.

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A line has appeared across the bottom of the screen and also along the middle. the bottom line is white/red.blue and the middle line is mainly green


If your TV is still under guarantee then change it asap, if not you have a problem, the panel has failed, in very rare cases the lines will disappear when the set is at its maximum operating temperature, that said it will never be 100% again, sorry

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1 Answer

Sony 43 inch rear projection tv, I have lined up the convergence but still seeing red and green around edge of the tv on the images, seems fine in the middle of the screen though.


Always start at the vary center of the screen with Green. Position Red over Green, then Blue over what now will look yellow. If all is perfect except the outside, you will need to adjust "Mid-Size" until the middle is just as far off as the outside lines. Then adjust the main "Size" adustments to match. Go very slow or you can make a mess of it.

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1 Answer

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a green screen on power up with retrace lines. At shut down a point appears in the middle of the screen. Sounds like either a shorted G2 grid, or bad flyback. If a phospher flake has shorted the grid in the tube, you can sometimes have luck by using a megger set at 1000VDC, to burn away the short. This is usually caused by the line HV going too high causing the anti-UV protection to kick in so fit a dummy load 40W lamp instead to the line output to allow measurements to be made.

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Sounds to me like its your green tube. Kind of expensive replacement, but easy.

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1 Answer

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Remove the front sceen and check for a cob web acrossone of the px tubes, is one possible cause of your problem.

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1 Answer

TV HAS AN OCCASIONAL GREEN LINE THROUGH THE MIDDLE OF THE SCREEN


The verticle output IC has a bad connection on it or is going bad. There are no user replaceable parts inside this set, as its a solid state set and all parts are soldered in. If your aware of the HI voltage issues, and know how to do alighnments on a tv, then you can order the entire board as a module from http://www.ptscorp.com. If you dont then your gonna have to seek a pro to assist you in this repair, as these sets hold HI voltage inside thenm even after they have been unplugged. Good Luck

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