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

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Convergence The convergence went on my tv. I tried to reset it but it only moves vertically. There is also a permanent swirl at the top of the tv. What do i need to do to fix it.. Please help. www.luda315@aol.com or call me at 646-416-2762 thanks Luis Cruz

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  • Luda315 Jul 12, 2008

    i switched the ic's and the ohm and now it doesn't go on. I hear like a hearbeat like pattern and then it stops.. What did I do wrong

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  • JVC Master
  • 8,617 Answers

Luis. You need to replace both the convergence ICs which are STK392-110 and possibly the 1.8 ohm 1 watt resistor you can get replacement ICs and resistors at the following link and they provide free installation instructions with pics so you can do the job yourself which is very easy on your model set.
http://servicemanuals.vstore.ca/

Posted on Jun 15, 2008

  • Sonny Berry
    Sonny Berry Jul 12, 2008

    Solder shorts if it sounds lika a thumping in the speakers. you either have a short between a couple pins or a couple of pins arent connecting thats the only thing that will cause the thumping after changing ICs.

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1 Answer

My Hitachi has a blue and yellow swirl band at the top and bottom of screen


Tv have a problems known as a convergence problems,it dead.The tv colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?Yes.Than the tv convergence board is dead.The tv convergence board must be replace 2 STK convergence ICS and some or all of it resistors too.To fix the tv convergence board to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Mar 02, 2011 | Hitachi Televison & Video

1 Answer

I have what appears to be shadowing of the words.. and picture.. blue wave across the top of picture..


Your Convergence ICs are likely failing. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless. They will be right next to each other.

Feb 20, 2011 | Hitachi 57SWX20B 57" Rear Projection...

1 Answer

Vertical line on convergence will not move left


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

Mar 24, 2010 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

My tv needs to be converged but i can't


the left and right volume buttons are what move the convergence horizontally, so if they dont move you will need to replace the convergence ICs .if you need more info I will need the model number of your JVC

Mar 13, 2009 | JVC Televison & Video

1 Answer

My JVC model number AV-56WP30 has a flashing convergence screen



Your TV most likely has a Convergence Chip Failure but I have not seen that symptom before.

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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
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 #1

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 note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.

Feb 28, 2009 | Sony KP-51HW40 51" Rear Projection...

2 Answers

Tv bows


I have the same TV and just finished having my TV repaired for the same problem. I was unable to converge the colors even in the advanced convergence setup menu. The lines were bowing so far that adjustment was not possible. I had to replace the vertical and horizontal convergence controllers located on the main electronics panel. They require a lot of soldering and should be done by a professional. Unfortunately this is a common "maintenance" repair that happens every 5-7 years, depending on the usage, costing around $500.00 for in home repair. DO NOT USE YOUR TV IF THE CONVERGENCE IS BAD AS IT MY CAUSE THE POWER SUPPLY TO BLOW resulting in addition repair costs.

Sep 10, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Here we go again


Sounds like a deflection problem you will need to troubleshoot the deflection circuit.

Feb 26, 2008 | Panasonic PT-47WX53 47" Rear Projection...

2 Answers

Hitachi 51SWX20B Convergence problem


Solution:

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

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.

Jan 28, 2008 | Hitachi 51SWX20B 51" Rear Projection...

1 Answer

Picture off on screen vertically-Black at top of screen and pic below bottom of screen


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
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 #1

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 note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


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

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Oct 04, 2006 | Panasonic PT-47WX51 47" Rear Projection...

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