Question about Samsung HCM4215W 42" Rear Projection Television

1 Answer

Red picture distorted

The red picture is distored like a pincushion on up left conner. The green and blue look ok so far. Auto adjust do not work. Tried to adjust convergence manually (I bought a service manual). Is it the ICs on convergence amp and how do I know? They are two stk392-010. where do I get them and what is the proper process to replace them?

Posted by on

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points


    An expert that got 10 achievements.


    An expert that got 5 achievements.


    An expert whose answer got voted for 500 times.

  • Master
  • 3,130 Answers
Re: red picture distorted

The complete convergence board AA95-02002A is avaiable through PTS electronics. You can call them at 1-800-844-7871. By the time you buy the right ICs for this unit, replace, them, it will cost you almost as much as another board. Samsung does not ave this board available any more. you can buy cheap replacement ICsl for about 20 bucks, but that would be a big mistake. Good Luck

Posted on Jun 09, 2007

Add Your Answer

0 characters

Uploading: 0%


Complete. Click "Add" to insert your video. Add


3 Points

Related Questions:

1 Answer

I have a Sony KDP-57WS550 TV that has a convergence problem. Based on the symptoms, I'm not sure whether to indict the convergence ICs. In the convergence mode, I can move the red (and blue) crosses,...

With your TV in setup Use a small magnet to "move" the non converged Red, Blue, or, Green color lines "crosses" (each CRT will need to be adjusted in turn) by moving the magnet close to the offending Red, Blue or,Green color CRT yoke or, tube while observing the movement of the CRT color line "cross" in a mirror ( try several places near the tube and, several strengths of magnets:) a refrigerator sheet magnet works well (you can cut these with a scissors to make a better fit or, apply less magnetic "pull." by making them smaller (you may need more than one magnet per tube to fix each CRT's convergence) When you have each CRT tube's convergence right, apply some clear silicone adhesive to the magnet and, permanently affix the magnet to the now "fixed" CRT tube exactly where you placed the magnet to obtain the best convergence on the CRT.
(Do not adjust the "Green" CRT unless you must, as it is used as the color line to adjust other lines to)

Jun 30, 2011 | Sony Grand WEGA KDP-57WS550 57" Rear...

1 Answer

Distored picture and a rainbow aura around objects in the pictur

this CRT TUBE internal Problem, first use CRT Rejuvenation Device. If dont repair you must change CRT TUBES

Oct 30, 2009 | Samsung Projection Televisions

1 Answer

Mitsubishi WS55859, was getting 2 and 2 blink, replaced the pico fuses and convergence chip - 3 times, each fix worked better than the next but evenually failed - now have it working, trying to adjust...

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.png

Oct 07, 2009 | Mitsubishi WS-55859 55" Rear Projection...

1 Answer

I have the opposite of a convergence problem. green pincushion cannot adjust so green is higher on left and right than center (bow tie). BUT red & blue will adjust and proprerly converge over the...

makenamicro, there is still a convergence yoke the green crt which means there is still a drive control circuit that controls your dynamic and static convergence. If you are working with out a service manual it is still possible that one of the convergence power amps is out, since you mentioned that you can adjust the red and blue to conform to the green pattern then try to adjust the green with out the R/B present if you ca not still adjust you green pincushion problem then suspect one of the power conv amps or a defective green conv yoke.(don't forget to check the small value resistors usually around 2 ohm and the pico fuses if the tv uses them. good luck and i hope i answered your questions, please let this web site know if yes by leaving some pos feedback. thanks!

Aug 22, 2009 | Sony Projection Televisions

1 Answer

Hitachi 50gx30B Pincushion problem

Please let me know in which direction the picture is distorted. Does it bow in from the top and bottom or left and right?


Mar 06, 2009 | Hitachi 50GX30B 50". Rear Projection...

1 Answer

Convergence problem

The convergence IC's need to be replaced. STK392-110. There are two chips and they both should be replaced in tandem. After that a simple customer convergence is all it takes to get it back to normal.

Search around there's better descriptions about the solution to this problem at fixya than what I just typed. But basically you replace those two IC's and then check all the resisters and you're good to go.

Oct 23, 2008 | JVC AV-48WP30 48" Rear Projection...

1 Answer

Convergence problem

You need to replace both convergence ICs number STK392-110 youcan get replacements at the following link and they provide free installation instructions with pictures so you can do the job yourself . heres the link.

May 04, 2008 | Toshiba TZ50V51 50" Rear Projection...

1 Answer

Jvc av56wp74 blue shadow

my suggestion would replace the focus block..john

Aug 10, 2007 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Distored red picture

sometimes a nearby speaker or cassette recorder or an old telephone may affect it, because of its magnetism power ,take away any nearby stuff and try manual reconvergence after a short power off for a reset ,

Apr 30, 2007 | Samsung HCM4215W 42" Rear Projection...

2 Answers

Pincushion Picture on a big TV screen!!!

The set has 3 IC's(one for each color)strictly dedicated for the aligment of each color,if one them does not align is because is going bad or is already bad becuase picture can not be adjusted,the IC's can be identify because they are mounted on a heat sink and have the markings STK--- ---,they are all the same and need to be replaced with an exact replacement.If you are familiar with tv service you can replace them,sometimes the new ones need to be aligned from the service menu,you will need the service manual,soldering and unsoldering will be involved,If you are not too familiar be safe and seek the assistance of a servicer.

Nov 03, 2006 | Sony KP-46WT500 46" Rear Projection...

Not finding what you are looking for?
Samsung HCM4215W 42" Rear Projection Television Logo

Related Topics:

51 people viewed this question

Ask a Question

Usually answered in minutes!

Top Samsung Projection Televisions Experts

Steven Wander
Steven Wander

Level 3 Expert

574 Answers

The Wyzzyrd

Level 2 Expert

83 Answers

Donald Griswold
Donald Griswold

Level 1 Expert

8 Answers

Are you a Samsung Projection Television Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides