Question about Samsung HCM5525W 55" Rear Projection Television

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Samsung HCM5525W 55inch

Green and red colors seems to spread a little in different directions. Also, the screen seems to bow on the top and bottom corners.
Is this something I can adjust?

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  • kodiak1007 Nov 14, 2008

    So, that whole circuit board with these radiators etc. need to be replaced then... I see.

    Appreciate it.

  • shawn280 Dec 12, 2008

    Kodiack1007, i have the same problem, were you able to replace that board and have it working back to normal?




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This is a convergence problem. It happens to all big screen rear projectors. The convergence output ic's need to be replaced. I would let a repair man do this.

Posted on Nov 14, 2008

  • Randy Sheppard Nov 14, 2008

    the two large ic's on that board need to be replaced. there are some resistors that also burn up but not always. If they are then the resistor that are burned up need to be replaced.



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What you are describing can be due to a number of different settings.

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Bowed picture and color misalignment

Replace both STKS ICs Ck low ohm resistors 2.7ohms most of the time there will be 2 of them bad.

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Color seems off possible bowing of the image at top and bottom

that's right my friend, you have a convergence problem, you need to replace the stk's and it is possible that you have some burned resistors. if can't do it yourself  you are looking $250.00 repair 
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its the convergence problem in your power supply board

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1 Answer

Red bow on top and bottom of 61dx01b

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.



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


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 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.

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Bow at top and bottom of the screen

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