Question about Sony KP-43T90 43" Rear Projection Television

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My tv has a bending in the top left part of the screen and when i flash focus it skips right pass the red ... and it has double vision in red on the screen

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Your TV most likely has one of two 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.
my tv has a bending - 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.
Solution #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 my tv has a bending - 578ba6c.jpged.

578ba6c.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.

Posted on Feb 28, 2009

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My rca projection tv has blue and green images like a 3D picture would without your 3D glasses, a double vision image and no other colors


sounds like the sensors are out of focus and your red sensor isnt turning on. look in the back of the tv for a master reset button or in your menu screen some sort of "Flash focus" or "convergence". They will realign the 3 sensors.

Dec 27, 2009 | RCA HD52W56 52" Rear Projection HDTV

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Hitachi Projection TV 57F500A red looks double.


You need to replace both of the convergence IC's and any bad resistors around them that protect them from damaging the power supply.

This repair can usually be done in the home and takes about an hour; I have done hundreds of them and now is a slow time of year for TV shops; look around if you are not able to do this repair; you can buy the chips on Ebay for less than 15 dollars for a pair plus shipping.

This is a very common problem in projection sets.

If this has helped you give me a vote here as I do this for free. If you have questions or need help:

etower.766@netzero.net

Aug 23, 2009 | Hitachi 57F500 57" Rear Projection...

1 Answer

Cna not get red adjusted on the right side of screen


need to replace the convergence Ics STK392-110 there are two of them. Also check the six 2.2 ohm 2watt resistors

Mar 28, 2009 | Panasonic PT-47WX53 47" Rear Projection...

1 Answer

Double vision on my Mitsubishi 46 inch width screen--TV is 5 years old


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 projeciton 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. Power light will blink. TV may also make a chirping noise.
Here are some photos of convergence problems.

42d3683.jpg

7859b01.jpg

e87380c.jpg
Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

Mar 16, 2009 | Mitsubishi WT-46809 46" Rear Projection...

1 Answer

Red shadow?


call a tech and have them converge the tv.its either that or the focus

Jan 02, 2009 | Pioneer PRO-119 60" Rear Projection...

1 Answer

Projection tv is Blurry and offset


You have a focus and screen control box it has 3 controls on top 3on bottom these are the controls for Red-Green-Blue screen drives and for focus to each tube. IT should have Focus /Screen on it.

Dec 19, 2008 | Philips 50P8341 50" Rear Projection...

3 Answers

Red Ghost


This may be a convergence issue but it is difficult to determine with that description. Watch this video and see if it will help you determine if you have a convergence problem or possible something else.

Aug 10, 2008 | Toshiba 57H82 57" Rear Projection...

1 Answer

53UDX10B 53 in. Rear Projection "3D vision"


the convergence IC`s and associated resistors have to be replaced, do not repeatedly push magic focus or the alignment after the parts change out will take longer which of course means higher repair bill, good luck

Nov 10, 2007 | Hitachi 53SDX01B 53" Rear Projection...

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