Question about JVC AV-48WP74 48" Rear Projection HDTV-Ready Television

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Jvc av-48wp74 48 in widescreen green projector problem

Top left side of screen is wavy and blured with blue tint and if u cover the green projecter it is fine this happen when powered it up it was fine when shut off there is no liguid anywhere in the tv could it be the chips on the heat sinks

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  • JVC Master
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Projection TV sets have two very common problems listed below.

Problem #1) 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

jvc av-48wp74 48 in widescreen green projector pro - bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Posted on May 07, 2010

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Posted on Jan 02, 2017

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1 Answer

JVC 48WP30 Blue Convergence will not move left or right


Install the convergence repair kit for your model. You can get the kit from www.tvrepairworld.com the kit contains the two IC associated resistors and the CD with instructions.

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What would cause my jvc tv have a green tint


It sounds like you can have optical engine issue. That's if green tint was show up very gradually, until one day it really caught your attention.Normally some parts of the screen more green than other. It should get progressively worse. To solve this issue optical engine have to be replaced. It is pretty expensive repair if your TV is out of the warranty.
In case if tint appeared suddenly in one moment - you can try to check component cable connection on the back of your TV if you are using one ( green, blue and red colored). Sometimes it's loose or after disconnection people reconnecting it in wrong way.
Experienced tech will determine if optical engine is bad by running test patterns in special service mode. If green tint present on Grey scale - optical engine is bad.
Sorry for bad news.
Regards.
Russ.

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Green tint sony 48' rear projection


Get the manual and reset the RED>>>BLUE>>>GREEN guns.
You are looking for a white X or cross.
Mastersage

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1 Answer

Convergence problem


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.

Search around there's better descriptions about the solution to this problem at fixya than what I just typed. But basically you replace those two IC's and then check all the resisters and you're good to go.

Oct 23, 2008 | JVC AV-48WP30 48" Rear Projection...

2 Answers

Screen is bowed (top and bottom) Color has a green and purple tint?


Your convergence has failed and needs to be repaired. Once quick test is to goto your convergence menu and see if you can adjust red and blue. If not its has failed and needs to be fixed. You can call in a repair shop or you can get the parts and instructions from www.TvRepairKits.com and do the repair yourself. Its a fairly easy DIY fix.
Here is an example video


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Jan 15, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Blue Screen/Waviness


sounds like convergance ic's mits is also know for bad caps
1000uf @ 16v check for bulges on top of the cap
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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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 www.TvRepairKits.com. 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

Convergence


Sounds like your convergence amp may be failing. If you replace it, you'll need to replace both at the same time.

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