Question about JVC AV-32260 32" TV

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Top 1" of display is interlaced lower on screen

As best as I can describe, it appears that the lines of the video picture that should be displayed in the top ~ 1" of the screen are being interlaced/overlapped into the display 3-4" just below. The spread is getting worse over time. Is it ever worth paying to get a repair diagnosis?

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  • mcanton Mar 22, 2008

    To answer the question asked by Technotop - the bowed picture distortion shown in the pic looks the same on both left and right sides of the display


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The problem is bad capacitors in the vertical deflection circuit. and bad solder conections on the vertical IC. your picture is a clasic example of the this condition. thank you for posting it. the capacitors to check are C1424,C1425,C1427,C1428, and C1433 the IC is marked IC1421. the most likely capacitor that is bad is C1427 this is a 1uF 50v. these caps suround the vertical IC the is a LA7841.

Posted on Mar 22, 2008

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Note to technotop: There is more danger of 110V "killing" you than 30KV that you can't possibly hang on to long enough to kill you ! Besides.what would we be doing working on a TV while running if we are using an ESR meter ?? This comment is for
public information...........................T.

Posted on Mar 23, 2008

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  • Vista Electronics Mar 23, 2008

    Techno.....I think you missed the point = IF the TV is left plugged in and the DIYr gets 110v AC from arm to arm thru the heart,that

    might do some serious damage.....a rather unlikely scenerio.

    As to failure of B+ to dissipate.....if a fuse device is open and B+

    remains present ( not discharged ) it can make you **** your hand back if touched but would not "electrocute" you. Definitely

    will make you jump ! I have been "bit" a few times in 35 years of TV repair......However, I am not recommending a casual approach to repairing any electronic product. Wisdom dictates

    caution coupled with suffient,accurate knowledge........What gags me is inaccurate,ludicrous statements made by psuedo-

    techies intent on making themselves look smart.....Do you have

    proof of people who DIED from touching 120-200 VDC ???

    There is no sustained current to kill you....only thing that does

    happen is discharge once....I have serviced tens of thousands

    of TV's from tube sets that held HV charge unless grounded to

    triplers to the IHVT's of today....I have heard the statement

    " watch out-the TV can kill you" many times......An auto can

    do ya in, too.....if you lay down in the road and get run over!

    Talk to you more, if you can be accurate.......Expert's Lounge.

  • Vista Electronics Mar 23, 2008

    "it can make you pull your hand back"............**** = ??

  • Vista Electronics Mar 23, 2008


    Good,clean informative answer / solution.



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The diagnosis is frame foldover at the top of the picture with possibly the showing of some teletext information. It is difficult to be sure of the geometry from the picture, but are the sides bowed? This could indicate not only a height problem but also a width problem too. If this is the case then probably one of the main power supplies is running at too high a voltage. Most of these problems are caused by faulty electrolytic capacitors.

Repair of televisions should only be attempted by professionals as there are internal voltages that can kill. A good technician with an esr capacitance meter should quickly find the faulty components and provide a fix..

Please rate my assistance I hope it is helpful.

Posted on Mar 22, 2008

  • dave donert Mar 23, 2008

    Note to Terryfic: you seem to have a flagrant disregard for public safety. My warning was of course completely relevant, I did not suggest it was EHT that was dangerous - it is more likely the line stage DC voltage of 120-200v DC that is likely to remain present even once the mains supply is removed. Dc as opposed to the mains AC voltage will cause muscles to contract and grip onto a source of electrocution, whereas AC will likely throw the amateur off. A professional will know that the set should be run with a safety mains isolating transformer - and will discharge any latent capacitors before handling the circuit. Further I don't see that having an ESR meter means that you would use it with the set running and even if the set was not running there are likely to be dangerous voltages present. You really should consider the bad advice you make public, as there are certain safety issues which should not be ignored, especially in such a litigious society like the USA.

  • dave donert Mar 23, 2008


    why are you nitpicking with issues of consumer safety. According to you parents should expose their children to the insides of live television receivers without cause for concern just to prove you right. It seems you really love the sound of your own voice. Of course there is a risk of electrocution how can you be that arrogant to suggest that there is none. Yes I would agree many things can kill you - but there again we are not dealing with those matters here are we? We are dealing with domestic equipment. The statistics are really irrelevant - for me one death or serious accident is one too many - how about you?

    Here is the medical situation:

    [edit] Ventricular fibrillation
    A low-voltage (110 to 220 V), 50 or 60-Hz AC current travelling through the chest for a fraction of a second may induce ventricular fibrillation at currents as low as 60mA. With DC, 300 to 500 mA is required. If the current has a direct pathway to the heart (e.g., via a cardiac catheter or other kind of electrode), a much lower current of less than 1 mA, (AC or DC) can cause fibrillation. Fibrillations are usually lethal because all the heart muscle cells move independently. Above 200mA, muscle contractions are so strong that the heart muscles cannot move at all.


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Hi - Here is a description of a few terms that might help, especially if you're in the market for a tv. If this answers your question PLEASE rate this as fixed. If you need more help just add a comment and I'll be glad to assist you further. Thanks.

High definition television is the highest form of digital television. It has a 16:9 aspect ratio, which is the same as a movie theater screen. This is possibly HD’s biggest selling point. The other is the resolution. High definition is the best available picture on a television. It comes in three different flavors: 720p, 1080i and 1080p.
What do 720p, 1080i and 1080p mean?
High definition programs are encoded with a type of resolution: 720p, 1080i or 1080p. The number stands for the amount of lines embedded within the signal. The letter describes the type of scan the television uses to display the picture. The ‘i’ means interlaced and the ‘p’ means progressive.
Why does the amount of lines matter?
The number of lines on a television is important because it allows for greater detail in the image. This is a similar concept to digital photos and how dpi determines print quality. The type of televisions all of us grew up watching had 480 visible lines on the screen. By doubling the amount of lines in combination with the type of scan, HD essentially doubles the quality of picture.
Does it matter if the resolution is interlaced or progressive?
The type of scan is arguable considering the amount of lines for each HD format. Progressive scan is a better type of scan because it doubles the amount of times the TV displays the image per one second in comparison to interlaced. Still, the difference between 720p and 1080i is so minimal that is isn’t an issue at all. While 1080p is better than 720p and 1080i, very few programs are made in this resolution so it really isn’t a factor right now…and, it might never be.

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Dang it, he was right!. Same "audio no video" problem.

After playing with multiple buttons shooting blindly I found the [ I/P ] button restored the picture immediately!

This stands for Interaced or Progressive scanning:

from wikipedia

"Progressive or noninterlaced scanning is a method for displaying, storing or transmitting moving images in which all the lines of each frame are drawn in sequence. This is in contrast to the interlacing used in traditional television systems where only the odd lines, then the even lines of each frame (each image now called a field) are drawn alternatively."

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