Question about Sylvania 6427TE 27" TV

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Elongated picture It appears that my picture has grown vertically and folded back on itself at the top of the screen. I would think that a simple vertical adjustment would solve the problem, but there is nowhere to do this procedure on either the remote or the tv itself.

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  • 3Val Sep 12, 2008

    Same tv, same problem, but it now has the thin line in center. How can I repair this myself? Can I get parts at Radio shack?

  • corrykuipers Dec 29, 2008

    I bought 2 of these tv's and they both do the same thing. the picture is elongated at the top and bottom so I miss part of the picture. I have tried to adjust it with the controls on the inside of the tv but it only helps a little. the sides of the tv picture seem to be pin cusioning also.

  • corrykuipers May 11, 2010

    I would really appreciate you checking for a solution.

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There is a bad capacitor in the vertical circuit. If you feel comfortable working inside a set and can solder, update this and I'll try to get the specifics for you.
Dan

Posted on Aug 29, 2008

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1 Answer

A black line (about 2 inches wide) appears at the top of the screen with this amount of the picture looking like it is folded down translucently over the remaining picture. What's up?


Hello
Your TV has vertical fold problem. Just check all the electrolytic capacitors. On checking, most of them may look good. But on circuit, when energised, will show problems. So it is best to replace all of them once and check. Please check the electrolytic capacitor connected to the vertical power supply [usually comes from the secondary supply section of the Line Output Transformer], first, and replce it. It may be a 1500Mfd or 2200mfd. Check it first by replacing a new one. In most foldover cases, this service will solve the problem. gopakumarg43@ymail.com

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HORAZONTAL TRACE OVERLAP AT TOP OF SCREEN. MY TOSHIBA 32D46 TV HAS DEVELOPED WHAT LOOKS LIKE A FOLD OVER OF THE TRACE AT THE TOP OF THE SCREEN, ABOUT 2 INCHES. CAN THIS BE ADJUSTED OUT BY ADJUSTING THE...


Hi,
Usually that is caused by a part failure. The vertical deflection ckt is most likely the roblem. Sometimes it's just a cap usually a 100mf right next to the vertical ic chip. Or it can be the ic itself. Unfortunately you can't adjust it out.

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I HAVE A JVC AV27D302: THE PICTURE IS FOLDED OVER


For how many years this TV with you? Most tv now a days after few years of using vertical IC solder started to dry(dry solder) you can try to re-solder or you may check also two capacitors (100uF/35V) for most JVC model has this symptom with this parts changes its electrical characteristics. If still problem persist replace vertical IC. Hope his helps, Good Luck

Feb 14, 2010 | JVC AV27F476 27" TV

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White lines at the top 3-4 inches of the screen.


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There are probably two capacitors that are bad in the vertical circuit. Not too hard to replace if you have any experience at all. Find the vertical output IC ( usually IC451 or similar ) and simply change the closest electrolytic capacitors. A professional can do this easily. Could cost up to $150.

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Top of creeen rolls over and back down from the top about 3"


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Dan

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1 Answer

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1 Answer

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Bad capacitor in vertical output IC circuit + check power supply
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You probably have a leaky or open electrolytic capacitor in the vertical circuit. This will require troubleshooting by a repair specialist, unless you can obtain a diagram and do a little spy work with an oscilloscope

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Horizontal line in my TV.


"Guest" obviously has no idea what he is talking about. There is no such thing as "frame section" and if the vertical IC, ramp generator or vertical hold circuits were bad, you would have no vertical at all. If you mean that there are thin white lines at the top 3 inches of the picture, and the top of the picture seems folded back on itself, it means that the pump-up capacitor is going bad in the vertical output circuit. This is a very easy thing to correct but should be done by a qualified tech.

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