Question about JVC AV-56WP30 56" Rear Projection Television

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JVC I'Art. 65" projection TV. AV-65WP74 green screen sages real low.

I am experiencing a proble with the green convergence. I think.
At top of the screen the green color sages and the red shows well.
When i remove the green optic tub the pic is fine, but has no green in the picture.

Posted by Tim Buckley on

  • 1 more comment 
  • jren Jan 07, 2008

    have the same problem on a 56" model. seems sort of common as I found several references online to similar issues. I have the ablitiy to R&R the chip. Own my own solder iron and a sucker and wic...Where can i get the chips?



    thanks.

  • Anonymous Jan 06, 2009

    I have the same problem and found that problem is becasue of the resistors which needs to be replaced. This will cost me $300 to fix.

  • b_conder Feb 04, 2009

    Having issues with the convergence on a 56" TV. I just had my brother-in-law replace the convergence ICs, but am not certain as to where the feed resistors are located, to replace them. The ICs did not resolve the issue, so I am hoping the replacement of the resistors will. The ICs were removed from a Pioneer television (PNs were checked to assure appropriate parts were installed.) The Pioneer did not have issues with convergence. What are the Resistor numbers, if available, from the schematic, and about where, on the system board, are they located? Thanks

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234cataract

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You have bad convergence ic and or resistors
this repair usually requires a repair tech

Posted on Dec 27, 2007

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Jusemon

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I had the same problem that required a $400 technician fix. 1st time i tracked it to a $0.05 resistor blown. could not find in radio shack... was due to bad "brain".

Posted on Dec 04, 2008

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LG Projection TV Model# RT-49NA11T Green color gun shows bent arc on top & bottom.Red & blue guns are ok.How to adjust the green gun to remove the bent arc. This is causing picture shows mix...


This problems ur tv have can't not be fix by adjustment.The tv have a problems known as convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadow pictures or 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all of it resistors too.These parts on the tv convergence board,must be replaced to repair the tv convergence board to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

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You will need to replace your two convergence I.C.s.They are two large IC mounted on a large aluminum heat sink.Replace both,look for any burned resistors near them,replace those if needed,and readjust your convergence. Good Luck

Let me know if you need any further help

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Red color convergence issue; Red lines are curved


This sounds like convergence output IC problem. convergence board would have to be removed - remove and replace 2 STK IC's and check the surrounding resistors. Shops usually $200-$400 Be sure to vote/rate me if this helped Thanks!
See link for more detail
http://www.ehow.com/how_4575598_yourself-projection-tv-repair-convergence.html

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Double Image Red and Green


Here are some of the most common symptoms and example photos of a convergence problem

  • Screen looks 3D
  • Colors don't line up
  • One or more colors can't be adjusted when using the convergence menu.
  • Screen is bowed or warped.
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Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.



You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.


2c07611.pngSolution


You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

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1 Answer

Screen hazzy and issue with blue convergence


bad convergence would cause show to look as if it was supposed to be a 3-d movie, if a bulb was going out then people would look purple blue -green,or some other off color, so likely the green bulb is going out from the color of the people you described.

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1 Answer

Converge off a little and screen has green tint


If you have the remote, go to the setup screen and move the picture. Converge has nothing to do with where the picture sits but, where the red, blue & green dots land. All you should see are pure white dots. There should be absolutely NO color ghost anywhere on the screen. If so, you need a bar / dot generator to set the convergence to center the dots.

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Screen lookes like colores separating


This is what is known as convergence. a projection tube ussally has three picture tubes.. red green blue. they all have to align. the concave picture indicates complete loss of convergence or convegence power supply. First question on these sets Do you have the convergence option in the customer menu under setup. if you do not this is a indication of the common "FL231 fuse problem" and inexpensive simple repair. I have wrote and artilcle on this under my tips and trick section. If you do have the option then next does autoconvergence work. in you case i would not think it work. under blue and red manual convergence does the crosshairs move. if not then this is indication of convergence power supply board. if they move at all this may indicate a convergence amplifer problem.

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1 Answer

Red & Green seem "off centered"


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Each color (red,green & blue) has an amplifier IC (STK-).
When there is a convergence issue,the first step is change both
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pico fuses.Then re-check convergence alignment.......T.

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2 Answers

Picture is yellow and green


Your missing the red drive on the set. Its most likly the picture tube. Its a possibility that the red drive circuit could be not working so the best thing to do is take off the gree picture tube socket and put the green board on the red tube. Of course do all this when the set is unplugged. if you have no tv experience. its not a good idea to be messing around inside of these sets.

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