Question about Sony KP-53S75 53" Rear Projection Television

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Sony KP-53S75 Red convergence problem

The red on my Sony KP-53S75 tv started bending and isn't lined up with other colors, giving the old 3-D glasses effect, double words and images. I covered the red lense and except for the missing red the picture is crisp and clear. I have read about the convergence ics and have ordered Sanyo replacements. I am a pretty good fix-it guy but want to know exactly what I need to do to discharge caps, replace ics, check fuses and resistors etc.While I'm in there,how do I clean the lenses and mirror(s)and adjust picture after? Thanks for any info.

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  • Anonymous Nov 20, 2008

    convergence adj



  • lillajon Apr 09, 2009

    hey i have the same problem i even bought a new remote to try to fix it but there is no tv setting on this tv that allows u to move the whole 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.
Sony KP-53S75 Red convergence problem - 701cb04.jpg
77ea520.jpgf0900cb.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 Sony KP-53S75 Red convergence problem - 2c07611.pngeplaced. 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.

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.

Posted on Feb 22, 2009

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To discharge the caps just unplug the tv and wait about ten minuites. to replace the ics i use solder wick to remove the solder. insert new ics and solder. after you have replaced them the convergence should pop back into place. to clean the guns just wipe off the top of the lens. if the mirror is clean just leave it as any little blemmish will show on the front screen. very rarely the stk ics dont fix the problem. if this is the case there are a few resistors and fuses next to th ics. to check them just use a cotinuity testor. if any of them are open replace them. the resistors and fuses usually run in groups of 4. four for each color.

 

Posted on Oct 13, 2007

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Posted on Jan 02, 2017

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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...

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Yours may have one or more of the following symptoms
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Another common problem is dull or washed out video.
Your TV may have one or more of the following symptoms....
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bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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This 3-D problem is because to failure of convergence out ICs failure in TV and convergence ICs will be replaced.
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  • 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
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.


2c07611.pngSolution


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 email and they will put one together for you. Their kits includes photo instruction guides, original Sanyo STK chips, convergence resistors, pico fuses, etc.

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No you will need to repace compents. Do you know how to solder and use a meter? If so I can assist you with the repair. If not you will need a repairman, he will cost you about $300-$500 for the fix.

Tim Nolan

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This is a problem with the convergence circuit. If you can solder, you can fix this yourself. Try resoldering the pins on the convergence ICs. If that fails to resolve the problem, replace the ICs. These are large black Ics attached to a heatsink and should be marked STKxxx. They shouldbe available for $15-$25 each.

Keep us posted.
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1 Answer

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Good Day, Martin Ping;

Picture won't merge? It sounds like your TV has had a failure in the CONVERGENCE CIRCUIT by replacing those IC's should correct your TV's problem.

Good Night and Luck, big IRISH.

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