Question about Samsung HCN4226W 42" Rear Projection HDTV-Ready Television

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Samsung hcm4216 rear projection

I have a blue shadow/bar across the top and arching half way down the set, Ive researched other projecion tv's and found that the blue convergence board seemed to be the problem. I've checked my model and i dont see convergence boards. On the list, there is a (picture tube for blue). Does that sound like what I need? It's $271.00 Is it resonably easy to replace? thanks. Dan. p.s. here's the parts list for my model http://www.samsungparts.com/search/search.asp

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· Samsung parts for convergance problem
· http://www.partstore.com/Part/Samsung/Samsung/BP9500142E/New.aspx

Posted on Dec 18, 2007

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Hitachi 53udx10b screen is dark, very blue and red. there is a red wave across the top of the screen. there is a blue "ghosting" of any text on screen.


The tv have a problems known as a convergence picture problems,it is dead.Tv set have any colors lines R,G,B mis alignments,have colors shadows pictures or 3D pictures look alike?Yes,than the tv convergence board it is dead to causes all these problems.Now the tv set convergence board must have to be repair like replacing 2 STK convergence ICS and some or all of it resistors too.To fixed the tv set convergence board to solved the tv set convergence pictures promblems.The tvs shops will cost u like $300-350 for parts and labors.

Aug 18, 2011 | Hitachi 43UWX10B 43" Rear Projection...

1 Answer

I have a 8 year old 57in Sony projection HDTV,when the picture is dark you can see faint blue lines in a curved arch like pattern across the screen.Any ideas? Thanks


The tv problems is call a convergence picture problems,it is just starting to developing.This problems when it is fully developing into a convergence picture problems to the tv eventually.Tv will develope into a colors lines R,G,B mis alignments,have a colors shadow pictures or into a picture 3D look alike.Eventually the tv convergence board will dies,have to have it parts replaced like 2 STK convergence ICS and some or all of it resistors too.This problems the tvs shops will cost u like $300-350 for parts and lobors.

Aug 13, 2011 | Sony KP-57WS500 57" Rear Projection...

2 Answers

Green hazy upside down arch of color across the screen


Your convergence board is in need of reworking on a component level or replacing the board! And you will most undoubtedly need to resolder the vertical IC and all ICs mounted on heatsinks on the power supply board. This TV is showing its age. You may choose to repair and that may last a year more or so! Good Luck and thank you for asking!

Jun 20, 2010 | Mitsubishi VS-50605 50" Rear Projection...

1 Answer

After a half hour of operation, the picture begins to shadow.


These sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks Distorted/3D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking screen
  • White looking sceen
  • Halos around objects
  • Red/Orange looking

You can see some examples and find a fix here...

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

Mar 07, 2010 | Hitachi 50UX57B 50" Rear Projection...

2 Answers

The 3 colors are off, i have shadows and arches in the screen


It is failure of convergence ICs and these two ICs will be replaced on D board.
If you are comfortable with TV repair and know good soldering skills then can do the job easily.
Convergence ICs are mounted with sliver heat-sink on D Board of TV and part number will start with letter STK...
Get back to me if you need further info.

Jan 17, 2009 | Sony KP-57WS500 57" Rear Projection...

1 Answer

Green cruve line


Good Day;
Suspect Convergence IC's STK4274, part Number 2003191. Replace all three IK04(red), IK05(green), IK06(blue).
Good Luck, big IRISH.

Aug 30, 2008 | Hitachi 50UX26B/27K 50" Rear Projection...

2 Answers

Green flickering and not lined up with red and blue


well I am not tom but your tv is having a convergence problem only a technician may be able to replace the bad ic inside the set

Aug 23, 2008 | Toshiba TZ50V51 50" Rear Projection...

1 Answer

Colour alignment off


Need to replace the convergence IC in the green vertical circuit. Check the 3.9 ohm resistors located in front of the IC.

Nov 02, 2007 | Samsung HCN436W 43" Rear Projection...

2 Answers

Kp57wv600


One of the convergence output IC's has stopped working and needs to be replaced. If the IC shorts out then it will draw too much current and possibly blow a fuse, and the set will shut down to protect itself. The IC should be replaced and the set realigned by someone with experience in convergence circuits.

Jun 20, 2007 | Sony KP-51WS500 51" Rear Projection...

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