Question about Projection Televisions

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R52WH74 problems I have the same problem as others noted at this site. 3d effect and the concave screen. i bought the chip that you suggested but i can't find it in my television can you please advise me on how to fix this. your help would be greatly apperciated. thanks. lindsmjustins

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  • lindsmjustin Sep 06, 2008

    All 3 colors are out, I read alot of reviews and alot of them suggested the STK392-150 IC to be replaced.

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Which chip did you buy as your model doesnt use Convergence Ics. Also how many colors are out of alignment? Is it one or are all 3 colors out. Your model has a convergence board and a convergence power supply board and depending on how many colors are out will determine which board you require.

Posted on Sep 03, 2008

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Concave tv screen colors distorted just had tv repaired one year ago for same problem


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.

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 from the link below.

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 - TV may also make a chirping noise.
Here are some photos of convergence problems.

49abec3.jpg
f0add3d.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.

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 solution

93a1209.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 know what you are doing. If you have never done this before we would advise calling a shop or if you want to do it yourself get a complete kit with instructions and support from www.TvRepairKits.com

May 29, 2009 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Screen looks 3d and schrunk


this is an indication of convergence failure. on these model the first suggestion or more like question is this do you have the convergence option in the customer setup menu? If you dont i suggest you read the fl231 problem in the tips and tricks section of this website. If you do and you still have the bow tie three d effect then the next solution is to replace what is known as convergence power supply. note when you start replaceing the boards that effect convergence it may need adjusting that a technician needs to do

May 28, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

I have an RCA 52inch rear projection tv model No#R52wh74 when i turned on the set the screen went into some concave mode and the color is al distorted what do i need to fix this


DO you have convergence in the customer setup menu? if you do not then check out the article fl231 problem in the tips and tricks section

Apr 28, 2009 | RCA R52WH73 Projection Television

1 Answer

My Philips 51PW9363 looks like someone is pinching the screen in the middle from the top and bottom. No color, sound or other problems that I've noticed.


Your TV most likely has a 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
77ea520.jpg
f0900cb.jpg

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.

Apr 22, 2009 | Philips 51PW9363 51" Rear Projection...

1 Answer

Concave screen colors in 3d


I have the same tv and just had mine repaired for the same problem just got it back yesterday turned out to be the fl231 fuse blown and the flyback transformer solder points have rings in them. It cost me $211.00 to get it fixed and they said it's common problem and most repair shops should have the part in stock and fix it in a couple of days.

Dec 14, 2008 | RCA R52WM24 52" HDTV Projection Television

2 Answers

Picture shadowing and waving pictures


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
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 #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.

Oct 19, 2008 | JVC AV-48WP74 48" Rear Projection...

1 Answer

RCA P61960 Picture is concaved


this is the conversion chip or sometimes chips that cause these effects the chip or chips are about $30 each but labor is alot more $250 -$300

Oct 18, 2008 | RCA P61960 61" Rear Projection Television

1 Answer

Philips 60PP9363H/17



You have a convergence problem. Here are some of the most common symptoms. 

Screen looks 3D
One or more colors can't be adjusted when when using the convergence menu. 
Screen is bowed in but stationary.

Solution: 
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit inlcludes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. Its an easy fix. 

Jan 11, 2008 | Philips 60PP9363 60" Rear Projection...

2 Answers

Convergance/bowing


most like tes thats all your going to have to replace + the silicon as if you dont thet wil not last as long as they should. Also you may have blow fuseable resistors next to the ICs make sure you check them as well.

Aug 16, 2006 | Philips 9P6044C 60" Rear Projection...

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