Question about Projection Televisions

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Could use more help

Hi
We are having a problem with our tv it has the three colors sounds like a convergence ic chip issue as you described but were not sure how to change out the old chips were there located if you can help further we would greatly appreciate it thanks also its a r52wh74
~big broke tv~

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  • 8,617 Answers

You will need the convergence power supply to repair the issue if its all three colors out of alignment. Leave these people a email with your model number and symptoms, they are RCA experts and will be able to help you get exactly what you need
http://servicemanuals.vstore.ca/

Posted on Sep 04, 2008

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1 Answer

The three colors have split


Hi,

If the picture on the screen looks like or almost the same as the photos below, then this is an indication of faulty convergence circuitry.


12_16_2011_11_50_01_pm.jpg


12_16_2011_11_50_21_pm.jpg

Yes, this is fixable and the most common caused of this symptoms is a faulty convergence chips(IC). Most of the projection TV used STK-*** (X means number) series as convergence chips and they are mounted on the large aluminum heat sink. Replacing these chips resolve the issue. It is necessary also to check the resistance of the resistors and pico fuses because in some cases they gone bad also when short circuits happened to the chips. Please watch the video below to give you an idea how to replaced the convergence chips.



Hope I helped you.
Have a nice day!

Jdvillanueva

Dec 16, 2011 | Toshiba Projection Televisions

2 Answers

I have some distored blue color across the screen


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
*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

May 15, 2010 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

I have some distored blue color across the screen


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

Mar 27, 2010 | Panasonic PT-53TW53 53" Rear Projection...

2 Answers

Tv has double pictue and yellow and green color


Double picture is due to convergence out chips failure in tv, replace convergence out chips (quantity 02) to fix the problem.
Let me know if you want to replace these chips by yourself, please note that it requires soldering work in circuit board of tv with proper tools.
Thanks.

Feb 02, 2010 | Sony Grand WEGA KDP-51WS655 51" Rear...

2 Answers

HD 1080 Series (WD-55809) - Color convergence issue


I don't know of illustrated instructions but I can provide you with the service manual for your TV. It does have illustrations of disassembly and components as well as schematics. Your set very likely needs new convergence IC chips. This is a common problem with all projection TVs. The repair is not expensive ($60-75 in parts)  but does involve unsoldering and removing the old chips and soldering in new ones. Some times there are some fuses that need to be replaced as well. If you want the manual provide me with an email address.

Dec 04, 2009 | Mitsubishi WD-52525 52" Rear Projection...

1 Answer

Still issue with convergence after replacing ICs


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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 a convergenece repair kit with 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 - 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

You can see some more examples and find a fix herebb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Sep 08, 2009 | Sharp 55R-WP4H 55" Rear Projection...

1 Answer

Hitachi 50ux26b projection TV, the color lines separated...


It sounds like a convergence problem; either bad solder connections at one of the convergence Ic chips or a bad Ic. if this was helpful give me a vote----if one of the chips is now bad it will have to be replaced(usual thing is to replace all the convergence ic chips---most use two and a few 3.

Aug 12, 2009 | Projection Televisions

1 Answer

?Convergence problem


Sounds like the convergence IC'S are either bad or a fuse maybe bad in the convergence circuit. The part # should be on the chip itself if you want to try and change them yourself. Good luck and keep me up to date on outcome. Cheers. Jay

Feb 09, 2008 | Projection Televisions

1 Answer

Covergence and Bowed Picture Problem


can you adjust any color of convergence in user menu blue, or red up or down left or right. if you can make any up or down left or right adjustments on any color then the likelihood it wont be a convergence ic. it would be a output resistor. so see if you can get any movement. with it being bowed i was suspect an convergence ic.

Jan 08, 2008 | RCA P60920BL 60" Rear Projection...

2 Answers

Color misaligned in RCA P52927


Hi,sounds like the convergence power supply reg.has failed,when this ic fails the adj. projection tv leaves the menu,this ic is located on the board above the board with 6 heat sinks on it mounted on the black plastic,its the ic that is heawt sinked on this board,part number is 215530

Nov 06, 2007 | RCA P52926 52" Rear Projection Television

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