Question about Panasonic PT-47WX42 47" Rear Projection Television

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Convergence My daughter hit our t.v screen on the right side and here is what we have now. The screen on right side looks like someone poured yellow dye down it. Everything is highlighted in blue (like 3 d). Tried all of the convergences. Red lines up good and green seems ok. Blue is way off on the right side and I can't move the crosses at all. There are only two crosses on the top left that line up ok and turn white. All of the other ones are way off. I am wondering if it can be fixed by a repairman. I hate to spend too much money for an in home repair if its going to cost a lot. I would rather put the money towards a flat screen. I know this is not something I can fix myself but I have no idea what repairs to this extent would run. Thanks, Monique

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Re: convergence

If the CRT Projection television has several colors or one that arent lining up, if due to an impact - you may have a broken mirror, if just happened all by itsself it may be a convergence issue, either issue is repairable, probably for around $400-$500. I dont recommend taking a set like that into the shop as sometimes transport can break/crack a mirror or throw convergence off.

Posted on Jul 19, 2007

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Re: convergence

My crt picture is double up. I turned it off then back on a half hour later and then the picture was doulbed the colors are out of line on top of each other.

Posted on Apr 25, 2008

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SOURCE: Convergence Problem?

The convergence IC most likly shorted, and burnt out the b+ feed resistor. There are two IC's inside this set to control the green red and blue convergence. They are most likly STK 392-###. The ### is another set of numbers that change depending on the model of the set. They each have three amps inside each one. You really should have both of the IC's replace with only original parts, as sub parts do not hold up and will not last as long as they should. Both IC's are soldered into place and if you decide to do this yourself, please be aware of the extemly high voltage inside of these puppys. there really are no user replaceable parts inside these sets unless you have solid state repair experience. Not only will yopu need the proper IC's, but you will have to find out what was burning. my best advice, Play it safe and call in a trained tech to assist you with this repair. The price should run someware between 300 to 450.00 to repair. Good Luck Please do not forget to rate this thread.

Posted on Dec 08, 2006

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SOURCE: Projection HDTV Pansonic 47" Curving blue and green colors on top and bottom of screen.

You will need to replace your two convergence I.C.s.They are two large IC mounted on a large aluminum heat sink.Replace both,look for any burned resistors near them,replace those if needed,and readjust your convergence. Good Luck

Let me know if you need any further help

Posted on Mar 29, 2008

SOURCE: PT-47WX53G green convergence and wave on bottom of screen

Had same problem with Red. Could not adjust. Funny broken lines. Found this link:

Replaced the ICs. Was disappointed at first 'cause it was still all bowed out, but then realized that the Convergence 2 "target" can be changed with the number keys. Working thru 1-9 and going back to readjust as necessary adjusted each one into perfect alignment.

Problem solved. TV works great.

I should add that while I am reasonable technically adept, I am a software geek and never soldered before... hardest part was getting up the courage to dive in and do it myself. Glad I did.

Posted on Oct 29, 2008

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My Sony Projection TV middle of the screen curves down on top and curves up on bottom. Picture looks dubble like 3D, screen looks like concaved. Left side of the screen color is light green and blue, right...

This is a very common failure on Projection sets. Its called a convergence problem.
You may have one or more of the following symptoms.
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.
No Audio / No Video - Makes Chirping Sounds
You can see some examples and find a fix here...

Sep 26, 2009 | Sony KP-51WS510 51" Rear Projection...

1 Answer

I have a yellow line on the right side of my Toshiba 50 rear projection TV and yellow shadows around people

It sounds like a convergence problem---go into the customer menu and select convergence---set should offer center and multipoint adjustment--in the multipoint look to see if the outer crosses adjust--if red or blue will not adjust somewhere--bad convergence IC's.

Jul 17, 2009 | Toshiba 42H83 42" Rear Projection...

1 Answer

Samsung HCN4727W Rear Projection TV, green screen, audio works

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,Akai2_bing.gif,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...

Problem #1) Convergence

Yours may have one or more of the following symptoms...

*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

Jul 10, 2009 | Samsung HL-R4667W Rear Projection...

2 Answers

Screen lookes like colores separating

This is what is known as convergence. a projection tube ussally has three picture tubes.. red green blue. they all have to align. the concave picture indicates complete loss of convergence or convegence power supply. First question on these sets Do you have the convergence option in the customer menu under setup. if you do not this is a indication of the common "FL231 fuse problem" and inexpensive simple repair. I have wrote and artilcle on this under my tips and trick section. If you do have the option then next does autoconvergence work. in you case i would not think it work. under blue and red manual convergence does the crosshairs move. if not then this is indication of convergence power supply board. if they move at all this may indicate a convergence amplifer problem.

Sep 10, 2008 | RCA HD52W56 52" Rear Projection HDTV

1 Answer


it could be either convergence or the velocity boards. Are you able to move the red and blue convergence in all four direcctions with the convergence adjustments?

Jul 12, 2008 | Sony KP-61XBR48 61" Rear Projection...

1 Answer

Tv problem

yes u need to go in to the menu where it says source and go to the convergence use the right arrow on your remote control it is a round ball u will come to a xross on the screen if the xross is nice and white in the center of the screen then u do nothing at that piont but if it is not hit your ratio button on the remote and your screen will change colors if it is green looking u can set the red lind if it is blue then u can set the blue line just read what it tells u on the screen to do.when u are done in the mode hit the round ball in the center and u can do all the x on the screen just find but please look at what it is telling u what to do on the screen i hope this will help it is very easy to set the convergance on the model set

Jul 09, 2008 | Zenith IQD61W35 61 in. Rear Projection...

2 Answers

Hitachi Big Screen TV 46 inch Problem

Do not adjust any knobs as instucted in the previous thread if you TV have a convergence problem. Doing so will only make things worse. The blog does however show you how to fix other common problems with these sets.

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.
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 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.

Sep 06, 2007 | Hitachi 46BX01B 46" Rear Projection...

3 Answers

How to adjust picture on projection tv

i have a 52" rca projection , and the screen looks like this ") (" on the sides can i do something to straiten it back out?

Aug 28, 2007 | Panasonic PT-53TW53 53" Rear Projection...

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