Question about Sony KP-46WT510 46" Rear Projection HDTV

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There are 3 distinct images for each object, one for each color. The colors are red, blue and yellow. The images are bowed or warped.

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  • rfrancis1234 Apr 22, 2010

    The Sears repair man came out and knew right away that that the TV has a convergence problem and ordered the board. He said the 2 big heat sinks should be warm and they are stone cold. Thanks for the info.

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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,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


There are 3 distinct images for each object, one - bb0cf99.pngYou can see some more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Posted on Apr 22, 2010

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Hi,

You have a convergence failure. Usually Replacement of 2 STK ICs and blown fuses fixes the problem with Sony.

If all 3 distinct images are visible, there is also a 5A pico fuse in the power supply open. (separate board on left side if chassis). Remove the power supply module and examine from the top, looking for 2 fuses (usually green, like small resistors). If you are experienced, fuses can be replaced from the top. If not, you have to access the foil side of the board and unsolder/replace. Extremely difficult replacement job.

If only one color outline is visible, a 3.15A Pico fuse is open. 6 fuses located under STK heat-sinks, (one for each adjust function, Red Vert, Red Hor, etc.).

Use an ohmmeter to check the fuses.

There are "thin film" components near the IC pins that can be a problem. When solder is being removed from the STK IC pins, solder can be accidentally removed from these other components, or solder tip touches them and causes then to physically become disconnected. Very difficult to put back in place because of the small size involved.

After replacing the STK ICs and open fuse(s) TV is fixed, just needs minor adjustment. Push the Flash Focus button on the front of the TV. This should align things pretty close. Then minor adjust in customer convergence adjust. Do this first in Normal or Wide size mode, then HD mode. If Flash focus will not complete the cycle, you still have a convergence fault, check your solder connections and fuses. Also look at the small components near the IC pins to see if any are twisted out of square. If the thin film components have moved during the soldering process, probably electrical connection is open.

Use our Convergence Gallery to confirm your fault. Service in Toronto, Ottawa, Calgary, Edmonton, Vancouver, etc.

easyab


Posted on Apr 22, 2010

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Hi rfrancis1234,

You have a failure in the convergence circuit of your television. The good news is that it's repairable. The bad news is not by you. But, it's not that expensive with respect to replacement cost of the set. In my shop you would probably be in the $200-250 range provided that 1) You brought in the set and 2) The problem in not with the DCU.

Borrow a mini van and take out the seats. Lay down a blanket and gently slide the set in on its back - yes, on its back. If you take it yourself you will save up to $100 for a projection TV service call. Take the set to a local, reputable shop - not a big repair facility. Bigger place = bigger overhead. More than a few techs is a big place. What I charge may not be what they charge, but it will still be well worth doing.

Good luck!

Posted on Apr 22, 2010

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Your convergence ics are bad and possable fuses to

Posted on Apr 22, 2010

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1 Answer

I have a HCN4727w samsung. Red/green shadowing. Bowed image


Projection sets have two very common problems.

The first common problem is convergence

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,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...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*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 http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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Projection TV sets have two common problems. The first is known as a convergence problem. Common symptoms are....
  • 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.
The other common problem is cloudy CRT fluid in the lens.

Common Symptoms - you TV may have one or more of these...
  • Dull Video
  • Bright video - whiteish
  • Redish video
  • Halos around objects
You can see some example photos and find a solution here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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Projection sets have two very common problems.

The first common problem is convergence

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,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...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*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 http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

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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...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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This is a very common failure on Projection TV sets.
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.
You can see some example photos and find a solution here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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it sounds like bad solder connections on the convergence IC's if you do not resolder them right away the IC's will blow out then you wil;l have to replace them. Good luck
Larry Dillon

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1 Answer

Bowed picture & red/blue/yellow separation


Your TV most likely has one of two possible problems.

Problem #1 - Failure in the convergence circuits. ( 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 are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.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.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, 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. Notice how dull the colors are and how white the screen looks. The screen may also look red, orange, dull, etc.

9e7eb5b.jpg

TV set after fluid change. Notice how bright the colors are now. Everthing looks crisp and sharp again.

182c282.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.

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This is a very common failure on Projection TV sets.
  • 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.

You can see some example photos and find a solution here...
http://www.fixya.com/support/r2861627-updated_convergence_problems_amp

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1 Answer

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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. 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, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit wiith 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 - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV 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 here
bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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1 Answer

HO board


CONVERGE PROBLEM
hello,
60pp9202 About 2 days ago tv went blurry -all colors separated!
I first tried factory setting convergence - NO GOOD!
Then by hand one cross aligned at a time (red mostly, and green, the blue doesn't show misalignment) , tv won't save my efforts after I shut it off.
The crosses around perimeter are bend like bows , so when you try to bring yellow and red crosses together to align with "converge red"- they can't line up because red and yellow crosses are bowed-bent opposite, in center they are closer to straight be still all are a bit warped! images on screen are now also warped as well! If there are any of you in the Queens nyc area that can come and do a good repair- I would be glad to pay a decent fair price! (917)687-6290 CALL ME IF YOU CAN COME TO FIX IT (2PM-8PM) ANTIQUEBABIES@AOL.COM
I WOULD ALSO APPRECIATE ANY ADVICE! CAN I FIX THIS MYSELF BY CHANGING A "SNAP IN" NEW PART OR DO I NEED TO DO SOLDERING AND HAVE TESTING EQUIPMENT AND SPECIFIC TV REPAIR KNOWLEDGE???
THANK YOU! KURT

Nov 08, 2007 | Philips 60PP9202 60" Rear Projection...

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