Sony KP-57WS500 57" Rear Projection Television Logo
Posted on Aug 10, 2011
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How do you replace the Projection convergance on a sony 57inch widescreen tv.

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Sonny Berry

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  • Sony Master 8,617 Answers
  • Posted on Aug 10, 2011
Sonny Berry
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You will need to replace both of the STK392-560 convergence ICs then the six pico fuses on the D board will need to be checked and possibly replaced, the G board also has two pico fuses that may need replacement. The SONY Type 1 convergence repair kit is available from www.tvrepairworld.com which fits your model the kit contains the two ICs, with heat sink pastre, the D board picos and the G board picos plus the CD that has step by step instructions for the repair

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  • Sony Master 3,459 Answers
  • Posted on Mar 09, 2012
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Projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as www.TvRepairKits.com

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. 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. The power light will blink. TV may also make a chirping noise.
Here are some pics of convergence problems.


How do you replace the - 7859b01.jpg

e87380c.jpgSOLUTION #1

What you will need to do is convergence. You can get a repair kit from TvRepairKits.com . It includes replacement parts,step by step instructions, support, etc.

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 nHow do you replace the - 578ba6c.jpguid changed.

578ba6c.jpg
TV set after fluid change

How do you replace the - 69189a5.pnguploads/images/65af323.jpg" alt="65af323.jpg" class="h_mi" />

69189a5.pngSOLUTION

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

  • Anonymous Apr 10, 2013

    Glad to hear it worked!

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I have a sony widescreen projection tv model KP51WS510. the picture has shadows and shows double.

Thats caused by failed convergence ICs your model uses the STK392-560 ICs you will also need several 3.5 amp pico fuses and a couple of 5 amp pico fuses to do the repair. The Sony Type 1 convergence repair kit is the correct kit for your model. It contains the parts and the CD with repair instructions. The kits available from www.tvrepairworld.com
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Question - What would cause the colors to be off..meaning..it looks almost 3D and with widescreen shows the black on the top and bottow bows into the main area of the screen. Any ideas?

Tv have a problems known as a convergence problems,it dead.The tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board have dead 2 STK convergence ICS and some or all it resistors too.The tv convergence board must be replace all these parts on the tv convergence board to solved the tv picture convergence problems.The shop,will cost like $300-350 for parts and labors.
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My Philips 60inch widescreen rear Projection the picture color is blue and red how can i fix it

Tv problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignment,have colors shadows or 3D pictures.The tv convergence board the 2 STK convergence ICS and some or all it resistors are dead.These parts on the tv convergence board,must be replaced to solved the tv picture convergence problems.The shop,will cost u $300-350 for parts and labors.
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My Sony 57inch Rear Projection TV that I bought about 7 years ago suddenly looks like a 3D tv, the 3 main colors are not aligned correctly. I read somewhere else that you can take off the panel and...

Your convergence ic's need replaced. These are mounted on a long silver aluminum heat sink. The part numbers will begin with STK. You will have to unsolder these, so I hope your versed in this area. If not, the average price is $250.00 to replace.
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I have a Sony 57inch rear projection HD TV that when powered on turns green then blue and picture turns off. What could be the reason for this?

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Arched lines in dark screens whether it's Cable or DVD playing Model number: KP-57WV600 Sony 57inch rear projection TV

Ur convergence it dead.Do u know how to solders? Tries these websites. Tv repair World.com or Tvrepairkits.com have it.Buy a convergence kit used what in that kit ur tv well get back to normal.The shop will cost u $300 for parts and labors.
0helpful
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Auto focus and manual focus(red+will not move left

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
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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.
0helpful
1answer

Convergence

Sony uses 3.15 Amp pico fuses near / under heatsinks for
convergence IC's = 3 on one side, 3 on the other......
Mustard / brown in color, order fuses from HB Electronics....T.
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