Question about Samsung PCN5425R 54" Rear Projection Television

1 Answer

How do I replace the convergence board in this unit?

I have read the solutions to color, bowed picture, & convergence problems with this model. My unit has all these symptoms. According to posts, problem usually can be solved by orfering new convergence board,BP9400383A, a plug-in unit. Will I be able to just unplug TV, remove back, locate board, unplug old board & plug in new; or will I have to discharge unit or something before replacing? I realize that I need to be careful to not short out anything else while in there. I build & replace hardware on all my computers, so am familiar with ESD etc. I'm just not sure about the high voltage in TV's. Thanks

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  • Charles Faulds Jun 08, 2007

    Thanks for your fast reply! Since your answer did not directly address the high voltage issue inside the set, I'm assuming that I can just reach right in there & grab that old board & replace with the new, close unit back up,& I do have the convergence adjustment & auto focus features. I will order the board & let you folks know how it went. Thanks again!

  • Charles Faulds Jun 09, 2007

    I will...Thanks again

  • Charles Faulds Jun 14, 2007

    Hi, I received the new convergence board from partstore.com & installed it with no problems. Great service from partstore, by the way,ordered on Friday, shipped on Monday, received on Tuesday. After installing the new board I used the manual convergence feature & apparently my problem is, indeed, solved. The picture is no longer bowed in on the sides, picture is now clear, & colors appear to be OK. I read in another posthttp://www.fixya.com/support/t151105-pro... that the problem with auto-focus or whatever, stopping at 37% would be corrected by the new board. If I use the perfect focus feature, it stops at 37%, as in the other post, the red & green appear to focus, but stops on the blue. Is this normal,do you think I received a defective board, or possibly just an aberration with this model TV, since the picture now appears to be OK? I did use a S-video input to try to adjust with perfect focus, as manual says some features don't work using HD or component inputs. Thanks for all your help! For $91 I was able to fix the TV myself; local TV repair quoted me a minimum charge of $400 for a big screen TV repair!

  • Charles Faulds Jun 14, 2007

    OK..Thanks a lot! Since I have been able to adjust the picture & the color to what appears to be OK, I think I will just leave it alone. I was concerned that the board was defective & you have eased my concerns. Since the picture seems to be OK, I really don't need the perfect focus feature...Thanks again for all your help!

  • watkinsrgm Dec 24, 2007

    Hot do you do a touch up alignment to converge the colors?

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  • 3,130 Answers

Yes the board can be replaced, but you may also need to do some touchup alighnment to the convergence, and maybe need to reprogram the magic focus or whatever the ato convergence is called on your set, if it has that feature, Good Luck

Posted on Jun 08, 2007

  • Larry  Dillon
    Larry Dillon Jun 09, 2007

    Just be very very careful!

  • Larry  Dillon
    Larry Dillon Jun 14, 2007

    No, you have a good board, now you need the service manual that will tell you how to set up the memory for the magic focus if you want that feature. There are also special jigs you will need as per the service manual to properly do this alighnment.

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2 Answers

The picture has a green outlined shadow


Please do us a favor and rate this solution after reading.

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. Repair kits with instructions are also avail from www.TvRepairKits.com

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

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69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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

Please do us a favor and rate this solution after reading

May 11, 2011 | Philips Magnavox 9P6034C 60" Rear...

3 Answers

Screen lookes like colores separating


Here's all I find regarding bad convergence from the techrepairCD:
RCA ~ITC222 D52W20~Convergence bad~~~ITC222~Replace leaky DL032 on
deflection board~~~~~~

RCA~D52W20Y ATC221~Convergence goes out/bowed after on for a few
minutes~~~ATC221~Problem may be on the deflection board. Was unable to
pinpoint where in this case.~~~~~~

RCA~D52W20BYX1 ITC222~Convergence way off after replacing small signal
board~EEPROMS were transferred over to new board~~~IK210 was
defective..transfer the new EEPROM back over.~Remember on these
sets*when replacing the SSB* if there is a small P on corner of
screen*hold volume on remote for 8 seconds after it reaches minimum.~~~~~

RCA~D52W20BYX1 ITC222~Can not align blue convergence* bottom really
bowed* possibly either color after replacing SSB.(Or no auto
convergence.~(Service menu: turn power off for 30 seconds* press vol dn
and ch dn* simultaneously for 8 seconds* set turns on with service menu
options)~~ITC222~In service menu* select convergence. If sensor
calibration was performed when convergence was too far off* it will not
alighn.~Get crosshatch with straight lines* perform sensor calibration*
then attempt convergence alignment again. Be sure to store settings*
then do sensor calibration again.~You must get a green flash of the
screen after sensor cal and a check in the box. RED flash indicated
convergence settings are too far off~~~~

RCA~D52W20BYX1 ITC222~no convergence correction~~~ITC222~LP650
(259271) DP670 (259246) & RP632 (259564) 4.7 3W on convergence power
supply board~~~~~~

Oct 28, 2008 | RCA R52WM24 52" HDTV Projection Television

2 Answers

Help with RCA projection TV P46812BL (chasis ptk195AA)


You have probably blown one of the convergence ICs. Effectively the easiest thing to do is replacing the whole convergence board, so that no soldering is involved.

Here you can buy a replacement convergence board, just select your model.

Let me know if you need further help.

Sep 13, 2008 | RCA P52930BL 52" Rear Projection...

1 Answer

My rear projection television is showing a double picture with the blue out of allignment. It also shows a bow on the top and a bow on the bottom.


The tv have a problems known as a convergence problems,tv convergence board it is dead.Tv have R,G,B colors lines mis alignments,have colors pictures shadows or 3D pictures look alike?Yes.The tv convergence board it is dead.Must require replacing 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board to solved the tv picture convergence problems.The tv shop,will cost u like $300-350 for parts and labors.

Apr 24, 2011 | Zenith IQC50H95W 50" Rear Projection...

1 Answer

PICTURE LOOKS BOWED OR SUNKEN IN


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

Oct 17, 2010 | Daewoo DSJ-4710CRA 47" Rear Projection...

1 Answer

Bowing of picture at top and bottom towards center.


Projection sets have two very common problems outlined below.

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. The TV can also shut down when the convergence starts to fail.

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, RCA and others.


You can more info and a DIY convergenece repair kit with instructions from TV Repair Kits using the link at the end of this article.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped or bowed
*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.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

Jul 12, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Picture is all distorted ,colors dont match up need 3d glasses to watch


HI, this is basic convergence failure. the convergence board controls the RGB stream and , if its malfunctioning or, the convergence chip set is damaged, it will distort the entire display and the colors will not be regulated correctly as you are experiencing at this time.

simply replacing the convergence board in this unit will fix your issue.

May 18, 2009 | RCA Televison & Video

1 Answer

Sony KP-65WS510 Convergence Problem


You have a convergence problem. Here are some of the most common symptoms. 
Screen looks 3D
One or more colors can't be adjusted when using the convergence menu. 
Screen is bowed in but stationary.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem. 

>>>Solution<<<< 

You need to replace the convergence chips and convergence resistors. 

Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. 


Jan 17, 2009 | Sony KP-65WS510 65" Rear Projection...

1 Answer

I have a convergence problem. My Sony KP-65WS510 has a picture that looks like 3-D and bows at the bottom and top of the screen. I already replaced both the IC's STK 392-560 (2 qty.) and check all six 3.5a...


You have a convergence problem. Here are some of the most common symptoms. 
Screen looks 3D
One or more colors can't be adjusted when using the convergence menu. 
Screen is bowed in but stationary.

Here is a quick test....

Using your original remote go-to the tv settings then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move them up, down, left, and right.

If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem. 

>>>Solution<<<< 

You need to replace the convergence chips and convergence resistors. 

Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. 


Dec 09, 2008 | Sony KP-57WS510 57" Rear Projection HDTV

1 Answer

Philips 60pp9363h/17


You have a convergence problem. Here are some of the most common symptoms. 

Screen looks 3D
One or more colors can't be adjusted when using the convergence menu. 
Screen is bowed in but stationary.

Solution: 
You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kit for your exact model. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc. Everything you need to fix it yourself. 

Hope this helps,
Ed

Sep 09, 2008 | Philips 46PP9302 46" Rear Projection...

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