Question about Sony KP-51WS500 51" Rear Projection Television

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Convergence I think convergence is the correct term for the problem I'm having. I have curved horizontal lines and I'm seeing double and triple. One of the possible answer given on this site suggests a long set of instructions but I couldn't even get started because the instruction for getting in the service menu didn't work for me (display, 5 vol+ and power). First: is this the problem I'm having.Second: is it something I can try to repairThird: is this the correct way to get inot the service menu?

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Re: Convergence

With tv power off ..then go in menu...replace convergence chips first..or call a repairperson

Posted on Nov 26, 2007

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Toshiba 42h83.... The blue convergence will not line up. The horizontal will but the vertical will only move so far. when touch focus starts the reds and greens are perfectly strait the blue vertical is...


Initially I would have told you to replace the convergence ICs but after reading your post carefully I think you could have a problem with the convergence box. The lines can only be bent/curved for two reasons. One - the yokes are bad causing an undue strain on the power supply and not being able to correct the problem. Two - the convergence box/board is bad and is not holding the settings causing the curve you see. I cannot tell you which problem you have. You wil have to determine this. I do have a tip at which may be helpful.

Thanks for using FixYa and for the great rating.


Dec 08, 2010 | Toshiba 42H83 42" Rear Projection...

1 Answer

When we try to adjust red cross, red adjustment will go side to side but not up and down. Red horizontal line is curved instead of a straight horizontal line. Blue can be adjusted up and down and don't...

Thats the classic sign of failed convergence ICs and resistors. You can get the convergence repair kit for your model at the kit contains the parts and the Cd with instructions.

Mar 09, 2010 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Picture has red curved horizontal lines

This is a common problem. Its called a convergence failure.

Problem #1) Convergence


  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted

You can see some examples and find a fix here...

Jan 20, 2010 | Sony KP-51HW40 51" Rear Projection...

3 Answers


You can determine if you have a true convergence problem or just need an adjustment very easily. Take a look at this youtube video to find out.

Hope this helps!

Dec 23, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

2 Answers

Tv has double image color red and a curl line on left upper corner also sometime in middle of tv it has line

This sounds like a problem with "convergence" of the TV. Convergence is the electronic aiming of the Red, Blue & Green projectors. Typical convergence problems look like double or triple images on part or all of the screen, wavy lines, curled edges, excessive red, green or blue color or tint, etc. Sometimes, convergence issues can be corrected in a menu setting of the TV that has to do with "Picture Settings" or "Advanced Settings".

If the colors are out of alignment a great deal or went out "all of a sudden" it will probably not be repairable via the menu adjustment described above - but is certainly worth trying.

If it does not straighten out with the menu adjustment, it will probably require replacement of the convergence integrated circuit(s) chips located in the TV. This was a big ticket repair years ago, but can be done sometimes for as little as $40 in parts. Don't let the low price fool you though.. It can easily take several hours (or more!) to access, remove & replace the components and reassemble the TV. Soldering skills are a must - and I'm not talking about soldering plumbing pipes here either. These are delicate electronic parts and need a 15 - 30 watt soldering iron and desoldering braid or solder ****** and LOTS of patience to perform CORRECTLY. As such, it is another "not a DIY project" unless you're willing to turn your TV into a large floor model paper weight. If you decide to attempt this repair, you should google your TV brand and model along with the term "convergence". Parts, costs and procedures vary by TV. Unplug the TV for a day or so before starting the work to let capacitors discharge fully - just to be safe. Lastly - don't forget the heat sink compound - it is an absolute *must*!

Sep 17, 2009 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer


If the entire screen is curved, and it is not taking the whole screen, then you have a vertical deflection problem.

If the colors are double and do not match, with lines of different colors around pictures , then you have a convergence problem, often caused by a faulty convergence board.

The curving effect can be a side effect of bad convergence, or you may have both problems at once.

Unless you are a TV repairer yourself, better calling technical support. Usually you can ring the number listed on the owner manual.

Jul 21, 2009 | RCA P52920BL 52" Rear Projection...

1 Answer

Red and blue ghosting,

The most likely cause is shorted convergence chips and possibly a few pico fuses.

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,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with instructions from the links 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

You can see some more examples and find a fix herebb0cf99.png

Jul 12, 2009 | LG RU-52SZ51D 52" Rear Projection...

1 Answer

Rca projection tv

this is a indication of convergence problem. the curved picture indicates total or a complete loss of convergence power. I first recomend you read the artilce in tips in tricks section. the fl231 problem it might be this if you do not have the convergence options in setup of customer menu. if not it might be a convergence power board issue

Oct 12, 2008 | RCA HD52W59 HDTV Projection Television

2 Answers

Curved red lies at top/bottom with some double vision in lines

This is from another fixya article but its relevant to your problem.

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.
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.

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 aroundimages.

Picture of a set that needs the fluid changed.

TV set after fluid change


2c07611.pngSolution #2

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

Apr 25, 2008 | Samsung HCM5525W 55" Rear Projection...

1 Answer

Distorted picture on RCA LCD TV

your set has convergence problems i dont have the answer yet ,i do know that convergence broad is not what is causing this! I have one in my shop now with same problem as soon as i find out problem i will post it !!!!!

Jan 09, 2008 | RCA HD52W59 HDTV Projection Television

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