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

1 Answer

48in projection tv jvc

My re light grid is saging in the center like a bowl and it wont line up with the other collers red stands out more i have to turn it off and my coler is not right picture is sagging which makes a double image in Red

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • JVC Master
  • 8,617 Answers

You need to replace both convergence ICs STK392-110 and you also need the JVC convergence resistor Kit # 1 . You can get them at the following link with free detailed instalation instructions. Heres the link.
http://servicemanuals.vstore.ca/

Posted on Aug 07, 2008

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

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

1 Answer

Can not get the focus grid to line up correct green adjusts fine but blue upper left corner will not adjust and the red grid is way off and will not fix


All projection TV sets have two very common problems. One is convergence ( 3D/Warped video or dead set) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. In some cases the TV will also not show any video. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projection sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....


  • 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.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


7859b01.jpg

e87380c.jpg

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

69189a5.pngSOLUTION

You can get the correct parts, step by step photo instruction guides, and support from www.TvRepairKits.com or click here

May 08, 2011 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

The grid on manuel convergence is locked w/wavy lines on the red


Projection TV sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the video to look normal. When its out of alignment the video will look 3D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the TV menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

This is a very common failure on these projection sets and a fairly simple DIY fix. All projeciton sets including Samsung, RCA, Sony, Philip Magnavox, Panasonic, Pioneer, Akai, GE, JVC, Toshiba, and others at some point will have the same problem.

Common Symptoms include....
  • 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.
  • TV shuts off after powering on. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.

42d3683.jpg

7859b01.jpg

e87380c.jpg
Here is a quick test....

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

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

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

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

May 24, 2010 | Hitachi 51G500 51" Rear Projection...

1 Answer

There is a wave/bow in the bottom and top of the picture on the screen of my Toshiba 70HX50. When I am in the grid screen in the service mode it looks like the center is 'bowed' out. How do I adjust this...


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 http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

May 15, 2010 | Toshiba 43H70 43" Rear Projection...

1 Answer

On our JVC AV-48WP30 48in, red shadows


some how the convergence ckt went bad,common problem to pj televisions.

Mar 19, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Jvc 48in projection tv


Somehow you have turned on closed captioning in TEXT mode. Navigate the setup menus to find the closed captioning options and turn it off.

That should resolve the problem.

Dan

Mar 20, 2009 | JVC AV-48WP30 48" Rear Projection...

1 Answer

I have a jvc hd 61g887 rear projection tv and the lights keep blinking blue and red and it wont power on!


i have a jvc hd 61g887 tv the lights keep blinking blue and red and won't come on

Aug 10, 2008 | Projection Televisions

1 Answer

48in projection tv jvc


wow, i have the same problem with mine. did u get a answer to this?

Jun 23, 2008 | JVC AV-48WP74 48" Rear Projection...

1 Answer

Convergence issues


Drifty convergence IC's need replacing..located on center PC board......STK392-570...change them both for reliability...T.

Feb 28, 2008 | Mitsubishi WS-65809 65" Rear Projection...

2 Answers

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


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

Nov 12, 2007 | JVC AV-56WP30 56" Rear Projection...

Not finding what you are looking for?
JVC AV-48WP74 48" Rear Projection HDTV-Ready Television Logo

Related Topics:

55 people viewed this question

Ask a Question

Usually answered in minutes!

Top JVC Projection Televisions Experts

easy alberta
easy alberta

Level 2 Expert

132 Answers

Jaime Hernandez

Level 3 Expert

2267 Answers

The Knight
The Knight

Level 3 Expert

68323 Answers

Are you a JVC Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...