Question about JVC AV-27D302 27" TV

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Picture The top 2 inches of the picture is inverted. Usually the top of everyones head is upside down. Is this a vertical limit problem and how much would it cost to fix it? I have the same problem. It appears that the first sweep of the picture is normal, but the second interlaced sweep is not...the top part of the second sweep is shows up as inverted for about two inches from the top of the screen. The picture definition is a bit blurrier than I recall, also.

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There are a couple of capacitors in the vertical section of the TV that became defective.
If you are handy with a soldering iron and know how to solder you might be able to DIY.

Posted on Dec 14, 2008

  • Jaime Hernandez Dec 14, 2008

    Locate IC421 and C424, C425, C427 and C437. These are the capacitors that might need to be replace to restore the vertical scanning.

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I have a Sharp 36F-630 36" TV. Recently, it started getting a "band" across the top of the screen. It gets smaller as the tv warms up. It used to go away completely. Now it goes from...


You have a swollen capacitors in the vertical section try to replace all the leaky capacitors, you will notice that there is a liquid leaking out in the buttom of the capacitor.It is like an oil spill.

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32A13 top part of picture is distorted


This is called Vertical fold over and is almost always a capacitor at fault.
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1 Answer

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1 Answer

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hi there, you have vertical section prob., repalce imeditely the electrolytic capacitor at the vertical section. do some test and check up. ty

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2 Answers

Picture problem


Sounds like you are in the begining stages of vertical foldover. This is a problem where the vertical driver waveform is distorted due to a component failure causing the beam to not be driven all the way to the top of the screen. Usually there is enough overscan that you would not necessarily notice the picture being smaller than the crt. When this happens the horizontal scan lines, which have not decreased, are all displayed on top each other or as the condition worsens they invert. This causes the symptoms that you described. The solution I use is to replace all the electrolytic capacitors in the vertical drive circuit. There may only be one bad one but finding it will drive you nuts. They only cost dimes so we're not talking much money. Without a schematic you can usually be successful if you replace all the electrolytic caps around the vertical IC. If you are going to tackle this be careful. TVs are dangerous. Remember to unplug the set and discharge the crt High Voltage anode. Good luck.

Jun 20, 2006 | JVC AV-27D302 27" TV

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