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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3 Answers

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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

    Bobbyj,

    Good,clean informative answer / solution.

    .......................T.

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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

    Terry



    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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1 Answer

How do you program so that when the phone rings you are able to pick up the call without hitting a button. Also when you make an outgoing call and you pick up the phone you get an active line instead of...


Sets that are programmed to ring should automatically have ringing line preference.

Programming is done on M7310, M7324 and T7316 sets.
To set up ringing you need to enter programming by pressing the feature key followed by **266344.When prompted to enter the password enter 266344.
The screen should say TERMINALS&SETS.
The 4 top line/feature keys are now used for programming2.gif.
At the terminals&sets prompt, press the show key (top right arrow).
The display should now ask for an extension number. Enter extension number you wish to program ringing on.
Press the show key (top right arrow)
The display should sat LINE ACCESS
Press the show key (top right arrow) .
The display should say LINE ASSIGNMENT.
Press the show key (top right arrow) .
The display ask for a line number. press list
The display should say line 001: appear only
press the Chng key till it says appear & ring
press next key (lower right arrow)The display should say line 002: appear only
press the Chng key till it says appear & ring
repeat procedure for remailing active lines
press the heading key (top left arrow) til the screen says terminals&sets again

Prime line assignment is also programmed at the terminals&sets prompt.
press the show key (top right arrow). The display should now ask for an extension number. Enter extension number you want to change the prime line on.
Press the show key (top right arrow)
The display should say Line Access
Press the show key (top right arrow)
The display should say Line Assignment
Press the next key (bottom right arrow) .
The display should say Line Pool Access.
Press the next key (top right arrow)
The display should say Prime Line
Press the show key (top right arrow)
Press the Chng soft key till you get to the desired line or pool to pick up on
Press the release key when finished

Oct 19, 2009 | NorStar Meridian M7310 Phone

2 Answers

Plugged in a new 23 inch LG LCD Monitor and cannot get picture


In additio to the fine help given by Mister.

If you have a DVI output on your computer get the cable for that and this will greatly increase the quality of your display.

Your graphics card should be able to autodetect a DVI monitor and suggest the best display type.

Sep 16, 2009 | Computers & Internet

2 Answers

Norstar m7310 I would like to set more phones to ring


To set up ringing you need to enter programming by pressing the feature key followed by **266344.When prompted to enter the password enter 266344.
The screen should say TERMINALS&SETS. The 4 top line/feature keys are now used for programming.
At the terminals&sets prompt, press the show key (top right arrow). The display should now ask for an extension number. Enter extension number you wish to program ringing on. Press the show key (top right arrow)
The display should sat LINE ACCESS
Press the show key (top right arrow) .
The display should say LINE ASSIGNMENT.
Press the show key (top right arrow) .
The display ask for a line number. press list
The display should sat line 001: appear only press CHNG til it says appear &ring.
press next key (lower right arrow)
The display should say line 002: appear only
Repeat same procedure as line 001 til all available lines are done
press the release key when finished
if the programming doesn't look like 1 described call me @1.410.984.4840

Mar 25, 2009 | NorStar M7310 Corded Phone

2 Answers

Flickering monitor


Flickering screen display

Flickering on the screen can be caused by defective hardware in the computer or by improperly installed software, but it can also be caused by interference from external devices. The following examples describe situations in which your screen could start flickering:
  • Screen starts flickering because of interference caused by devices which generate magnetic fields, for instance:
    • a TV set
    • a laser printer
    • another monitor
    • fluorescent lights
    • hidden power lines
  • Apart from interference, an incorrect setting in your system CMOS setup can also cause flickering. On some systems it is possible to distinguish between interlaced and non-interlaced monitors. The setup of your system should always be colour non-interlaced.
  • Proximity to the monitor of fans, air-conditioning units or other devices with rotating motors.
  • The number of devices using power from the same electrical line. Are you overloading the plug?
  • Monitor placed on an unstable surface.
  • Improper video drivers, this is a software problem, see section B
  • An improperly configured or a defective video card.

Sep 30, 2008 | E-Machines E17T 17" Flat Panel LCD Monitor

2 Answers

Code


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.

May 12, 2008 | Durabrand DWT1905 TV

2 Answers

"Unusable Signal"


Ok, I stopped short of going to Best Buy to get a new TV b/c my DAD suggested I pull the DVD player on another tv.

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."

So, my Dad says that "TV s are based on the interlacing" technology. I must have picked progressive scan while I was in the dark fast forwarding last week.

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1 Answer

Television display


Hi,
In basic terms TV images are made up of hundreds of horizontal lines, with interlaced scan it will display in order line 1, 3, 5, 7 and so on and once it reaches the end it will fill in the missing lines 2, 4, 6 and so on until it starts again.
For progressive scan it will display the lines in order 1, 2, 3, 4, 5 etc.

cheers

Jan 21, 2008 | Televison & Video

1 Answer

Lines on the non-touch screen


The connection to the lower screen is probably a bit broken. If you feel up to it you could take your DS apart using a tri winged screwdriver (can be bought from www.whitedog.co.uk/catalog/nintendo-wing...) and check the connections or you could just send it in for repair.

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