Question about Samsung HCL4715W 47" Rear Projection Television

1 Answer

Convergence problem? I have a HCN4426W Samsung projection tv and recently the red tube picture has been arcing downward on the left and right sides of the screen. I'm not really sure how to describe it but the red image is distored, arcing downward, and kind of twitches. Using the autofocus won't correct the problem. Is this a convergence issue, would replacing the convergence board solve the issue? I was looking at buying this board to replace the current one: ( http://www.samsungparts.com/part_detail.asp?oldpart=BP95%2D00146C&catalog%5Fname=Parts+and+Accessories&category%5Fname=&product%5Fid=BP95%2D00415B&search%5Fmodel=HCN4226W ) Thanks for the feedback. Convergence problem. Red is swooping through upper left hand corner and part of the picture is out of focus. When I try to manually align focus the red won't do it. What part do I need where is the best place to get it and how hard to fix it? Thanks Wally

Posted by on

  • wbusch Apr 19, 2008

    got a new convergence board and installed it. no change. i can unplug the board and the tv looks the same?

    wally

  • gazzo Jul 08, 2008

    my red is not converging .Its bowing downards at the top. both the c'verge ic's are new and problem still exists

×

1 Answer

  • Level 3:

    An expert who has achieved level 3 by getting 1000 points

    Superstar:

    An expert that got 20 achievements.

    All-Star:

    An expert that got 10 achievements.

    MVP:

    An expert that got 5 achievements.

  • Samsung Master
  • 8,617 Answers

The convergence anp ICs are usually what go bad in that unit. They are two ICs both are STK392-040 and they are at board location ICZ103 and IZC103 on the Sub Board attached to large heat sinks. You can get replacements with free installation instructions and free on line tech support at the following link.
http://servicemanuals.vstore.ca/
let me know if you need further assistance.

Posted on Apr 10, 2008

  • Sonny Berry
    Sonny Berry Apr 21, 2008

    The convergence board wont correct the problem. You need to replace the two Convergence ICs on the sub board STK392-040 and you will be back to normal. See my response above. That site will help you get it back to normal.

  • Sonny Berry
    Sonny Berry Apr 21, 2008

    The convergence board wont correct the problem. You need to replace the two Convergence ICs on the sub board STK392-040 and you will be back to normal. See my response above. That site will help you get it back to normal.

×

Add Your Answer

Uploading: 0%

my-video-file.mp4

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

×

Loading...
Loading...

Related Questions:

1 Answer

Left side of sreen is blurry/halo effect. Right side is normal. Magic focus stops when it gets to green and flashes green number 3 on bottom left of screen.


All projection TV sets have two very common problems. One is convergence ( 3D/Warped video) the other is CRT fluid ( Dull Video). Here are more details and solutions for both.

Common Problem #1) Convergence has gone out

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 projection 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 pics of convergence problems.


7859b01.jpg

e87380c.jpg

Common Problem #2) CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

69189a5.pngSOLUTION

You 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

Jan 08, 2011 | Hitachi 51F500 51" Rear Projection...

2 Answers

I have a Philips 51PW9303 Rear Projection TV that had blue shadows around the sides of the screen and now has a green and red bowed line at bottom. Does I need a convergence board to solve this?


If the following doesn't work the tubes could be at the end of life:
Adjusting convergence:
Note: For best results, the Projection TV needs to be turned on for 15 minutes or longer before adjusting the picture tubes (convergence).

To adjust the convergence of the picture tubes:
  1. Press the 'MENU/SELECT' button on the remote.
  2. Press CURSOR RIGHT to enter the PICTURE menu.
  3. Use CURSOR DOWN and RIGHT to select and enter MANUAL CONVERGE.
  4. Press CURSOR RIGHT to select CONVERGE RED or press CURSOR RIGHT and DOWN to select CONVERGE BLUE.
  5. A crosshair will be shown on the screen. If there is any red or blue fringe around the crosshair, use CURSOR RIGHT, LEFT, UP, DOWN to try and merge the fringe colors with the crosshair.
  6. Press the 'MENU/SELECT' button to return to MANUAL CONVERGE menu.
  7. Press the 'EXIT' button to exit the menu.
If you are satisfied with the convergence you may stop now. Otherwise, you can continue and adjust the convergence more using mult ipoint convergence.
To Adjust multipoint convergence:
  1. Press the 'MENU/SELECT' button on the remote.
  2. Use CURSOR RIGHT to enter the PICTURE menu.
  3. Use CURSOR DOWN and RIGHT on the cursor ring to select and enter MANUAL CONVERGE.
  4. Press CURSOR RIGHT and DOWN on the cursor ring to select MULTIPOINT RED or MULTIPOINT BLUE.
  5. A grid of crosshairs will appear on the screen. If there is any red or blue fringe around any of them, press CURSOR RIGHT to enter NAVIGATE mode.
  6. Use CURSOR RIGHT, LEFT, UP, and DOWN to move to a crosshair that has a color outline.
  7. Press the 'EXIT' button to enter ADJUST mode.
  8. Use CURSOR RIGHT, LEFT, UP, and DOWN to merge the color with the crosshair.
  9. Press the 'STATUS/EXIT' button to return to NAVIGATE mode. Repeat as necessary.
  10. Press the 'MENU' button to return to the MANUAL CONVERGE menu.
  11. Press CURSOR DOWN until SAVE MULTIPOINT is selected.
  12. Press CURSOR RIGHT to save the multipoint settings.
  13. Press the 'EXIT' button to exit the menu.

Apr 03, 2010 | Philips 51PW9303 51" Rear Projection...

1 Answer

Red and green arcs, 3-D effect


Convergence is dead.Know how to solders?Replaced 2 Convergence ICS and all it resistors.Tries Tv repair World.com,Tvrepairkits.com for the convergence kit.The shop will cost u $300 for parts and labors.

Jan 21, 2010 | Samsung HC-P4752W 47" Rear Projection...

1 Answer

KP-57HW40 rear projection TV colors out of alignment and warped


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. 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, Zenith, and others. You can get a convergenece repair kit wiith 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 - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV 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 here
bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jan 04, 2010 | Sony KP-57HW40 57" Rear Projection...

1 Answer

Blue arc and ghosting across middle part of screen.


Replace Both of your convergence ICs they are big Black ICs will have STK on them! Use STK392-150s or the 180s Better ICs Call Mats Electronics 1-800-628-1118

Dec 21, 2009 | Pioneer SD-533HD5 53" Rear Projection HDTV

1 Answer

Samsung HCN4727W Rear Projection TV, green screen, audio works


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,Akai2_bing.gif,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...

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

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

Jul 10, 2009 | Samsung HL-R4667W Rear Projection...

1 Answer

Arcing Picture tube


get a different tech from a different store to come out, needs to replace convergence ic's good luck
please mark the post with a fixya

Feb 16, 2008 | Toshiba 65HDX82 65" Rear Projection...

1 Answer

Red Convergence on JVC AV- 65WP74


convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

Jan 28, 2008 | JVC AV-65WP74 Rear Projection Television

2 Answers

Convergence issues?


most likely the convergence board.
Ordered complete convergence board, ask samsung for part number Convergence AMP PCB $108.44, from www.samsungparts.com
or could send it in to ptscorp.com for repair.

Dec 23, 2007 | Samsung HCN4226W 42" Rear Projection...

2 Answers

Convergence problem?


That board, P/N Bp94-00155a should fix the problem and be fairly easy to replace. Make sure you unplug the TV before starting the repair though. Duh!

Mar 11, 2007 | Samsung HCN4226W 42" Rear Projection...

Not finding what you are looking for?
Samsung HCL4715W 47" Rear Projection Television Logo

107 people viewed this question

Ask a Question

Usually answered in minutes!

Top Samsung Projection Televisions Experts

The Wyzzyrd

Level 2 Expert

83 Answers

Donald Griswold
Donald Griswold

Level 1 Expert

8 Answers

Jaime Hernandez

Level 3 Expert

2267 Answers

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

Answer questions

Manuals & User Guides

Loading...