Tip & How-To about Televison & Video

How to repair crt projection TV (out of sync)

This tips is for the CRT projection TV that a problem of picture,out of sync,triple or double image,out of convergence,bad picture or image..

If you are experienced that kind of problem on your projection TV (CRT type) you need to read this tip to help you on how fix it on your own.

This are some tips and step by step procedure on how to fix that kind of problem:

  1. Remove the cover of your projection TV,by loosening all screw.
  2. After that,you have an access to the projection board.
  3. Try to look at the CRT projection driver..
  4. Pull-out the CRT projection driver from the unit,to repair it easily.
  5. Look at the convergence i.c. .STK###-### and check some resistors and diode near that.Also look for the leak/bulging top capacitor..
  6. If you done step # 5,and If you found some chance value of resistors,shorted diode,or leak/bulge capacitor.Replace it with the same type and ratings.
  7. Also replace the convergence I.C.And I already check the supply at eBay.com.They have stock,that convergence i.c.Buy now!
  8. Use Soldering Iron and Soldering Pump to replace the parts.Be careful for replacing the parts,please double check always specially when you replace the capacitor,it have a polarity(+/-).
  9. Finally,when you already done this procedure,test it by power ON the unit.
I hope this tips is giving you a great and wide information and help you to fix your problem.

If this tips is helpful please click the yes button below this tips.

Thank you very much for reading my tips..

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1 Answer

The picture started getting a triple image (everything was outlined in blue and yellow). We had a board replaced by a tv repair service, over $300 and the tv was ok for about 80 hours. (warranty on new part ran out before tv reverted back to same problem) We did some wiggling on the board that was replaced and tv was ok for about 2 months. Now the picture is triple image with bright(really bright) pink and aqua colors and the picture is warped looking..


Ur tv convergence board that was replaced for ur tv.The 2 STK convergence ICS was old it is not new it is those 2 STK convergence ICS on the tv convegence board is dead again and some of the resistors on the board maybe shorted and dies also must replaced too.The tv convegence board was put on ur tv those parts on the convergence board are old components parts,ur must repair tv convergence board again to fixed this problems called convergence pictures problems.

Aug 22, 2011 | Mitsubishi VS-60609 60" Rear Projection...

1 Answer

I have a 63' projection TV. The picture is off. All of the lights are working, but the images are fuzzy, and you see the image tripled. The three images overlap each other in red, green, then blue. It seems like the colors have to put back in sync to form one clear image. Also I can see a bow effect at the top of the screen.


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.

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TV set after fluid change

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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 09, 2011 | Philips 55PP9363 55" Rear Projection...

1 Answer

You can see the red blue and green lines on my tv it is like it is out of sync


I'm not sure what you mean by the "lines". If you mean the image looks like "double" (or triple!) vision, then you need to adjust the red/green/blue convergence. This is especially noticeable with white images on dark background (like text of credits). If this is it, check you manual or explore your menu via the remote. Sometimes convergence can be a problem if the tv was moved or experienced large changes in temperature... or sometimes all by itself!

Jan 22, 2011 | RCA D61W20 61" Rear Projection Television

2 Answers

RCA 56 inch hdwidescreen


Did you use the Automatica Convergence to try and straighten it out? If that does not help, you can manually adjust the convergence.

Jul 12, 2008 | RCA HD56W58 56" TV

1 Answer

samsung hdtv has a problem


this points to a convergence amp problem. in customer setup do you have and control or movement on convergence adjstment

Mar 25, 2008 | Televison & Video

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