Question about Samsung PCN5425R 54" Rear Projection Television

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Convergence problem or??

Watching tv yesterday, suddenly pic became three images and blue is way off kilter/ angled downward. Tried manual convergence and could move red, but not blue. Perfect focus would not go beyond 4% after several tries as well. Manual convergence screen displays the little plus marks being way off level at all edges of screen. Sounds like from postings that the convergence module is bad?? Also noticed recently that at at very infrequent times the color would go out of whack for a moment or two while showing a sort of light crosshatch on screen then return to normal. Board time??

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Re: Convergence problem or??

Hello, I am having a convergence problem I believe. The red is dipping down and out of alignment. When I attempt to realign the red it will not do it properly and usually just makes it worse. The other two *blue and green* seem to be find as the picture looks good across the middle of the screen because red is Barely off at the middle. Does this sound like a convergence board problem?

Posted on May 22, 2008

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Re: Convergence problem or??

Yes it has power supply and convergence problem let me know if you need help with part # s or how to fix it

Posted on Jun 23, 2007

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Mitsubishi WS-55511 convergence problem?

No,need to diagnose.It a 100% convergence problems.Convergence problems very easy diagnose.The picture look like 3D,colors lines don't lines up.Fuzzy,out of focus.Convergence controls don't work to lines up any colors cross.The tech is cheating u if he said cost $125 to diagnose.If u know how to solders u could fix this convergence problems about $100.U can buy a convergence kit at Websites Tv repair, shop everythings fix parts and labors only $300.

Mar 16, 2010 | Mitsubishi WS-55511 55" Rear Projection...

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Mitsubishi Rear Projection WS

5ebe434.jpg A projection television and a convergence control method thereof are provided. The projection television, which magnifies images displayed on cathode ray tubes (CRTs) for the colors red, green, and blue using lenses and projects the magnified images onto a screen, includes a convergence control apparatus capable of adjusting the convergence while an input image signal is displayed, the convergence control apparatus including: an image signal decoder which processes the input image signal to generate a data signal, horizontal and vertical synchronous signals, and a start signal indicating the start of either the horizontal or vertical synchronous signal; a convergence control unit which normally projects an image signal output from the image signal decoder onto the screen and performs convergence control using a predetermined region of the screen displaced from a visible region of the screen according to a convergence control command; and a main microcomputer which inputs the convergence control command to the convergence control unit when the start signal is input from the image signal decoder, stops the convergence control when a completion signal is input from the convergence control unit, and performs a control operation to continuously display the image signal during the convergence control.
the pro in convergence control circuit better change tat..

Sep 21, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

The other day my wife was watching tv and suddenly

Ur convergence is dying or well be dead.3D pics or shutdown.U must know how to solders? The parts in convergence board must change like ICS,and all it resistors.The websites Tv Repair, for the convergence kit.The shop will cost u $300 for parts and labors.

Jan 14, 2010 | Proscan PS61670 61" 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

Blue Convergence out of sync

you need to adjust the convergence. you set up convergence 1 then 2. follow the manual. (Its easy, you just align the + signs so they make one white one (instead of three green, red, blue) sounds like something or someone bumped the tv, causing the blue lens to shift a little.

Nov 23, 2008 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer


Your convergence chips and convergence resistors are going bad. When they fail the screen colors will look distorted/3d looking.  Another symptom is one or more colors can't be converged using the convergence menu. You can purchase the parts over the internet. Just make sure you get Sanyo brand convergence chips and the correct flame proof resistors. You can also check the site They are working on a complete kit for this model.

Nov 12, 2008 | Philips 60PP9202 60" Rear Projection...

1 Answer

Blue shadow above writing and pictures on screen

it sounds to me like your convergence boarde is bad and needs replaced

Oct 23, 2008 | Projection Televisions

1 Answer

Tv looks fine when playing movies or Tv but looks all teac blue when using xbox360

Depending upon the signal, perhaps the convergence is off all the time, just not seen. If you can solder, try resoldering the convergence IC pins. Let me know if there is any change.


Sep 24, 2008 | Sony KP-51HW40 51" Rear Projection...

3 Answers

TV going Blue

malfunction of the convergence ics

Dec 27, 2006 | Sony KP-57WV600 57" Rear Projection...

2 Answers

Akai 4298 projection tv

Most likely, this is a problem with the convergence board. The convergence amps (STK392-040 x 2)are internally shorted. These can be replaced or the whole convergence board can be replaced. It's cheaper to replace the amps, but more convienent to replace the board (especially for the less electronically inclined!! :) Hope this helps ...

Aug 29, 2006 | Akai PT4298HD Rear Projection Television

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