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AUTOMITIC FOCUS WILL NOT LINE UP

WHEN YOU PUT THE TV ON THE CROSS TO LINE LINES UP IT HAS A GREEN LINE OUTSIDE THE CROSS SO THIS MAKES THE PICTURE WITH A GREEN LINE AROUND EVERYTHING ON THE SCREEN AND IT MAKEKS THE WORDS DOUBLE SO YOU CANNOT READ ANY WORDS THE TV IS A SONY MODEL NO. KP-43T90 IT'S A 42 IN

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Both Convergence fault (malfunctioning convergence IC) and dirty sensor may be the cause for auto focus not aligning to presets. Another possible reasons is that presets are bad and must be set up with service procedure.

In all cases the job should be done by a technician, as it is easier that you cause more damage , rather then fixing the TV.

You can call technical support by using the number listed on your oner manual.

Posted on Jan 23, 2009

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One possibility reason is The Sensors installed inside screen of TV can be dirty and not giving proper data to adjust convergence automatically.

These 4 sensors require cleaning by front screen taking off.

Posted on Jan 21, 2009

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Hi

It sound like your convergence is out.
HAve a look at this repair guide
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

look at the before and after pictures to confirm if this is your fault.

Posted on Jan 21, 2009

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I have a Sony KDP-57WS550 TV that has a convergence problem. Based on the symptoms, I'm not sure whether to indict the convergence ICs. In the convergence mode, I can move the red (and blue) crosses,...


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1 Answer

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1 Answer

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Best Solution posted on Apr 12, 2008 Asker's Rating 3%20stars_w.png
dc2eb76.jpg MikeNJ1964
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Rating: 89%, 674 votes
You have a completely different problem. The screen voltage for the blue picture tube is slightly too high on your set. This will put fine lines in the background of the picture, called retrace lines. This is very common and easy to correct. Remove the front speaker cover and the access panel behind it. Look inside and you will see a black box with six controls, each control having a little white glue on it. This is the Focus/Screen block. Three controls are labeled Focus and three are labeled Screen. The screen control in the center is for green but I am not sure if the screen control on the left or right is for blue for your model. With the TV on, set it to VIDEO 1 but do not connect anything to the VIDEO 1 jacks. This will produce a pure dark picture, showing any faint lines in the background. Choose one of the screen controls and increase (turn clockwise) it slightly. If the blue lines do not get brighter it means you are turning the red screen control, so put it back where it was and choose the other screen control. When you find the blue screen control, decrease (turn counter-clockwise) it until just when the blue lines are gone. If you want you can check that the red and green screen controls are set to just below the point where their faint lines are visible. When done, replace the panels and your picture will be back to perfect.
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MikeNJ1964 was exactly right! I have a Sony KP-65WV600 that had horizontal green lines that showed when the picture was darker. I had to remove 3 screws on the right and left side of the tv holding in the speakers...carefully pop out the middle panel from the clips holding it in....remove 4 screws from the cardboard in the middle and remove the cardboard. I then saw the six screws. The adjustment screws were the three below. I turned the middle screw until the lines dissapeared. I tried the left screw and blue lines appeared which I then adjusted away.
THANKS a bunch. SAVED me money!!!

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1 Answer

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