Question about Samsung HCM4215W 42" Rear Projection Television

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I have a SP-47Q7HE Samsung rear projection TV that has 3 pictures that are not aligned. Top and bottom of screen distorted concave and convex?? Any advice appreciated

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You need to replace your STK ICs they are big black ics will have part number on them you also need to CK 2 reisitors low ohms in same circuit 2.7ohms Mats has the ICs 9.95-14.95 each.
1-800-628-1118.
Encompass Parts Distribution you can order the whole board if they still have any in stock visit their website and type in your model number or call 1-800-638-3328

Posted on Jul 16, 2010

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The picture on our Sony TV Model KP-43HT20 recently became distorted, concaving at top and bottom. If I use reset the Flash Focus, the picture will return to full screen side for awhile but the colors do...


The tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergene board have dead 2 STK convergence ICS and some or all of it resistors are dead too.These parts on the tv convergence board,must be replaced to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Jan 15, 2011 | Sony KP-43HT20 43" Rear Projection...

2 Answers

Colours are distorted. The screen convexes towads towards the sides, and top and bottom. The 3 main colour filters -- red, green, and blue -- do not line up with the picture image.


you have a convergence problem and nedd to replace the convergence ic's i think the part # for the generic replacement is stk392-110-there are 2 of them. you also need to replace( check 1st with an ohmeter) the 4 fuses associated with the power supply going to the convergence ic's-they are solder in fuses and you have to know the value to put in the correct ones. unless you are a technician, i would suggest call for service ont this, but feel free to give the tech this info.

Apr 21, 2010 | Sony KP-46WT510 46" Rear Projection HDTV

2 Answers

I have a samsung 42 picture lines top and bottom of screen


DAve1645 is correct!

This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:


  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted

You can see some examples here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Nov 28, 2009 | Samsung HCM4215W 42" Rear Projection...

1 Answer

The picture projects the image with concave lines on the edges. I'll explain further: somehow the picture is distorted in a way that bends the four edges of the picture in a curved-concave manner so that...


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

Nov 26, 2009 | Mitsubishi VS-55705 55" Rear Projection...

1 Answer

Rear projection - convex distortion / ghosting / expanding screen


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,Pioneer2_bing.gif 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 http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Oct 17, 2009 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Colors are distorted and picture is concave, how do i fix this?


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

Mar 08, 2009 | RCA P52926 52" Rear Projection Television

1 Answer

PICTURE


By the picture that you have supplied with the question you have a rear projection tv. The problem you are describing sounds like you have had the convergence module in your tv fail. Depending on the age and make of the tv, the repair costs ( if out of warranty ) can be prohibitive. The convergence module on rear projection tv's not only is in charge of bringing the 3 different color images together into a watchable picture but also handles the east west correction ( concave / convex aspect to the picture or lack there of ).

Jul 02, 2008 | RCA R52WH73 Projection Television

1 Answer

Convergence problem


The convergence ICs are located on the left board on a huge heatsink they should be STK392-110 or STK392-120. You can get replacement ICs at the following link and they also provide free step by step instructions on how to remove and install the new ICs.
http://servicemanuals.vstore.ca/

Mar 29, 2008 | Philips 60PP9202 60" Rear Projection...

2 Answers

Picture distortion


This should cost you about 300 to 400 bucks to repair. If the service wants more, they are ripping you off. The convergence IC's are whats bad in this set and both of them cost less the 30 bucks. Good Luck

Oct 15, 2007 | Sony KP-46WT500 46" Rear Projection...

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