Question about JVC AV-56WP74 56" Rear Projection HDTV-Ready Television

1 Answer

JVC AV56-WP74 Convergence problem

About 6 months ago I had a convergence problem and the tech replaced the two STK392-110 ICs and I had a beutiful HD image until last night when I accesed the convergence setting and did a auto adjustment. I trew off the red color and even after I did a reset and several manual adjustments I cannat make the red align on the outer areas of the grid specially the top and left bottom corner.
I wander if I need to replace those ics again.

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

    Genius:

    An expert who has answered 1,000 questions.

  • Master
  • 1,139 Answers

Hello saduchan,

I think that your ICs are ok, What you need to perform is what is called dynamic convergence, This involves using the internal convergence controls to align the outer edges of the screen. I am assuming that the center of the screen is ok? it's just the edges which are misaligned, right? Now for the bad news, this task is not easy in fact the job takes a pro about 6 to 12 hours to do it right. I think you should have a qualified TV technician attempt the static convergence setup followed by the dynamic convergence setup.

I hope this helps,

Thank you,

Shuttle83

http://www.electron-age-technologies-llc.com

Posted on Dec 29, 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 52 rear orijection top has doulbe image in


Ur convergence is dead.Must know how to solders?Must replaced 2 convergence ICS and some or all it resistors.Tries websites Tv repair World.com,Tvrepairkits.com to buy a convergence to repair it ur self.The shop will cost u $300 for parts and labors.

Mar 14, 2010 | JVC HD-52Z575 52" Rear Projection...

2 Answers

Toshiba 55H70


It could be that this time the convergence module went. I have replaced many convergence ICs and don't believe I have ever had any go out within 6 months. That does not mean that they can't. Remove the leads from the convergence area to isolate the ICs as you said you were told. Now remove the digital convergence board which should be nearby and probably will be in a metal box for noise protection. If you can I would unsolder the convergence ICs to totally take them out of the circuit and just in case one or both shorted out. Once everything I talked about has be removed try the unit. If your problem is in the convergence only your set should work but have an ugly picture. Let me know what you find and we will go from there.

hardrocko

Feb 06, 2010 | Toshiba 55HX70 55" Rear Projection...

1 Answer

HAVE A JVC AV-56WP30 REAR PROJECTION TV THAT THE PICTURE APPEARS IN A BOWED SHAPE. THIS TV WAS JUST REPAIRED FOR THIS PROBLEM ONE WEEK AGO AND IN 100 MILE DRIVE TO PUT IN APARTMENT IT IS AGAIN NOT WORKING....


The convergence is dead,Must replaced Convergence ICs and resistors.Tell the shop to repair it again.They probally didn't replaced the ICs or resistors.This problems can't come back about a week,at 6 months i can understand.

Jan 11, 2010 | Projection Televisions

1 Answer

CLASS HD Convergance ploblem


You need to replace STK ics which are convergence ICs in your tv

You can get from the link below


Click this link to get convergence IC

It will cost you $20-30 to buy these IC .

Jan 30, 2009 | JVC AV-48WP74 48" Rear Projection...

1 Answer

JVC 56 inch projection AV-56WP74 red color not aligned


I have the same tv set and about 4months ago Ihad the IC STK392-110 replaced. I was told that it was the most common problem with proj. tvs. It did solve the probem until last night when I went into the menu to change a audio setting and stupiditely accesed the convergence setting and decided to do an auto adjustment which mesed up my beutiful HD picture. Now I have the red out of alignment ad even after I did a reset and multiple manual adjustmets it is still off at the top and bottom af my screen.

Dec 27, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Conversion probleme with jvc av-48wp74 i did the set-up but dont want to keep it


you need new convergence ICs STK392-110 ICs and the JVC convergence resistor Kit #1 you can get the parts at the following link with free instructions and free online tech support to help you with the final adjustments after install. Here is the link.
http://servicemanuals.vstore.ca/

Aug 10, 2008 | Projection Televisions

1 Answer

Green double image


you need to replace both convergence ICs they are both STK392-110 and you can get replacement ICs at the following link and they provide free step by step instructions with pictures so you can do the job yourself. Heres the link.
http://servicemanuals.vstore.ca/

Jun 30, 2008 | JVC AV-65WP74 Rear Projection Television

2 Answers

Convergence Problems


If you did not use heat sink compound then you probably have not hurt the new IC's yet but you should remove them and add the heat sink compound NOW. If the convergence IC's are bad then you will have access to the convergence menu but the adjustments will have no effect. The fact that you switched the IC's and got the same results shows that the IC's are good. If your red convergence is still way out when the new IC's are installed then the old IC probably burned out the low value resistor associated with the Red Vertical (RV) channel.

Jul 02, 2007 | JVC AV-48WP30 48" Rear Projection...

Not finding what you are looking for?
JVC AV-56WP74 56" Rear Projection HDTV-Ready Television Logo

172 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

68368 Answers

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

Answer questions

Manuals & User Guides

Loading...