Question about JVC AV-48WP30 48" Rear Projection Television

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Hello , this web site is awesome i hope you can help me out. MY JVC TV have pink and green neon wavy lines at top and bottom of the screen.... how do i fix it and what is it gonna cost me ?

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This is probably too late being a year later, but for the reference of anybody else reading this later on down the line, THe convergence IC's need to be replaced. STK392-110. There are two chips and they both should be replaced in tandem. After that a simple customer convergence is all it takes to get it back to normal.

Posted on Oct 31, 2008

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Re: HELP HELP PLEASE JVC TV - JVC AV-48WP30 48" Rear Projection Television Projection Televisions

Remove speaker off tv

Posted on Sep 15, 2008

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This Sounds like it is a projection television. This style of TV is ran only off of one red, one blue, and one green light. (RGB) I have 2 suggestions. First, and most likely, the lights are out of alignment. Second the bulbs(tubes) could be going bad. I would contact a local TV repair service and have them bid to you the price or repair (for free) and see if the cost of the repair out weighs the cost of a new TV. Try and find a small independent tv repair guy he will be half of a big time guy

Posted on Nov 02, 2007

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Jvc hd projection tv screen is tinted pink/red PLEASE HELP!!

not so sure if warped lines about it not being convergence, if the lines are diagonal and light red etc it may be a screen circuit issue. Hard to tell from description----take a few good photos and post them on a free photo sharing site and provide a link here---expert who sees what it looks like may be able to help...............

Sep 02, 2012 | JVC Projection Televisions

2 Answers

I have pink and green wavy lines. Most pronounced at the bottom of the screen.

Ur tv have a problems known as a convergence problems,it dead.The tv have colors lines R,G,B mis alignments anywhere in the pictures,have colors shadows 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 solved the tv pictures convergence problems.The shop,will cost u like $300-350 for parts and labors.

Nov 24, 2010 | Panasonic PT-47WX49 47" Rear Projection...

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Green and pink wavy lines throughout. Picture

I am having the same problem and so far unable to fix,

Jan 22, 2010 | Pioneer SD-582HD5 58" Rear Projection...

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Mitsubishi DLP wd-52725 wavy lines from top left to bottom right

the DM board is going bad and needs to be rebuilt. check out

Jan 02, 2009 | Mitsubishi WD-52725 52". Rear Projection...

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Arched pink lines across screen. Now green and pink double stacked wording.

Projection sets have two very common problems.

The first common problem is convergence

These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya

Oct 25, 2008 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Coulor distortion at the top left of the screen

Hello jordan ashe,

This is an indication that the green CRT is having a convergence problem. This might be caused by the convergence amplifier or by the CRT. Does the rest of the picture look OK? and in addition can you supply a picture of your TV so as I can see what you are seeing and develop a proper diagnosis?

Thank you,


Sep 28, 2008 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Wavy green lines at top of tv

1024x768 Normal 0 Convergence

When A REAR PROJECTION TV has coloured outlines or a 3D image the Convergence Circuits most likely need attention.

Replacing the output amplifiers (located within the Convergence IC's) allows the pictures to line up correctly, and no more color outlines.

This is the most common fault in all makes of rear projection TVs.

Some models of TV require major disassembly and considerable shop/manufacturer's support to repair because of their design that causes other power supply or vertical deflection problems. The poorly designed products require a "bench" repair that can typically cost from $350 t0 $700.

Some TVs are designed for on-site repair and have more reliable circuit design that does not usually cause damage to other parts of the TV when convergence chips fail. The ones that usually allow reliable on-site repair are JVC, Samsung and Hitachi.

It is normal to have some resistors in the circuit burn up or increase in value from the heat (from 2.2 ohms to 5 or 10 ohms). These resistors must be replaced with the right value or the chip may fail again.

This is not a simple repair like changing batteries or a fuse. Reading through the other posts shows many that try and end up with bigger problems.

Your JVC uses STK 392-110 IC's. Misinformed people replace the IC's with other "new and improved" IC's, like STK 392-150. These are devices with different characteristics and require different value resistors in the circuit. Replacing with the STK 392-150 will cause overheating of the resistors and a damaged IC.

If you are in Calgary, I can help. If not, get someone that has experience working on your JVC. My website is below with some costs and explanation.

Good Luck,


Jun 02, 2008 | JVC AV-56WP74 56" Rear Projection...

2 Answers

Green screen crash

i have a projection tv. It is a a Samsung HDTV 55" widescreen. There is a green curvey lines at top of screen. Can you help?

Jan 20, 2008 | Projection Televisions

2 Answers

I am told my Hitachi 61SDX01B (UltraVision/Ultrascan) has "Green Geometry"

Sounds like a convergence promblem.

Here are some of the most common symptoms of a convergence problem.

Screen looks 3D
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed in or warped.

Here is a quick test....

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

Try to adjust the 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.

Its a fairly easy fix on the Hitachi sets.

You can get a repair kit that includes all the parts from The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc.
Everything you need to fix it yourself.

Oct 15, 2007 | Hitachi 61SDX01B 61" Rear Projection...

1 Answer

Hitachi 61SDX01B

The problem is called green geometry.There is nothing wrong w/the green pix tube.It is critical to get the green geometry

accurate because the red and blue convergence overlays on

the green.If you have more than an alignment issue,that will need

repair before adjustments are attempted.

Oct 15, 2007 | Hitachi 61SDX01B 61" Rear Projection...

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