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My lg rear projection t.v has ghosting mainly with blue. Happened after i moved t.v. From what i have researched it sounds like convergence chip or board?? have tried auto convergence without success - is it worth replacing the chip? any idea on cost? as I really like my t.v & don't want to get a new one

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ICs are STKs big black ICs will have part number on them Call Mats Electronics 1-800-628-1118 ICs $12.00 Also call Zenith Moduel Exchange 1-800-632-6637 See if they have rebuilt board & cost.

Posted on Oct 02, 2009

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You can try using a convergence coil. You can rent, borrow, or buy one from an electronic parts store. This convergence coil becomes magnatized by plugging it in to the room a/c outlet and you take it to the front of the tv screen with the set on and start a rotating motion and start moving away from the screen backwards about five feet and then cut the convergence coil off from the switch that is on the coil. You may have to do this two to three times. You can also call a tv technician to do this for you which will take him 5 minutes.

Posted on Oct 02, 2009

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Picture is no longer working properly. Picture is blurry and colors are all wrong. Ghost image. Happened all at once not gradually. What needs fixed mitsubishi 65" medallion series. appox 7 yrs old


Your Convergence ICs have failed. It is very common on rear projections. The solution is to replace the STK chips, check fuses and the resistors next to the STK chips. Replace as necessary and re-align via the service menu. It is about a $300 repair at a tv service center. You will need the service manual if you decide to do this yourself.

Try This:
When you notice the symptons Use this simple test to verify.
Go to the users menu on the tv.
Look for the converge option probably under setup or video setting. Converge is short for convergence to align the red and blue colors to the green color.

If you cannot move the red either horizontal or vertical, then the STK chip has failed for red section.
If you cannot move the blue either horizontal or vertical, then the STK chip has failed for the blue section.

If you can move both in each direction then the problem is something else.


Note if one STK chip fails, you replace both regardless.

Feb 19, 2011 | Mitsubishi WS-55819 55" Rear Projection...

1 Answer

My lg rear projection tv is showing the red green and blue ghosting on the pictures making them distorted ,they are all side by side, the colours sre all there but the picture looks as if its on three...


3D effect caused by failing convergence chips on the internal control board. You will need professional intervention to repair or replace this board or the chips. Often this is in association with other parts that need attention and is not a DIY.

Please rate our help++++Thanks for using FIXYA

Oct 08, 2009 | LG RU-52SZ51D 52" Rear Projection...

1 Answer

Red and blue ghosting,


The most likely cause is shorted convergence chips and possibly a few pico fuses.

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,Akai,Pioneer2_bing.gif Hitachi,Mitsubishi,Zenith and others.
You can get a convergenece repair kit with 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 - 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

You can see some more examples and find a fix herebb0cf99.png http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Jul 12, 2009 | LG RU-52SZ51D 52" Rear Projection...

1 Answer

I have a 42'' where the color in the top left corner seems to have separated, or shifted. The picture is ghosted in red and green in this area. It happened all of a sudden.


Your TV most likely has a convergence failure. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem


  • 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.
Here are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.jpg
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.

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Jun 19, 2009 | Akai PT4298HD Rear Projection Television

1 Answer

Ghosting


Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem
  • 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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
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.

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


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

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Mar 20, 2009 | Philips 60PP9352 60" Rear Projection...

1 Answer

Blue Ghosting Help Needed


Good Day, jhazelwd;
From what you say it sounds like the Convergence IC's have failed. Part number 267P150010, STK392-570, replace both IC's. They are on the middle board secured to a large heat sink.
Good Luck, big IRISH.

Aug 24, 2008 | Mitsubishi WS-65809 65" Rear Projection...

1 Answer

Yellow and Blue ghosting. 4 year old TV What Video Chip do I need to fix the Convergence problem


A chip is a very specific integrated circuit (IC) that control many different functions. It would be nearly impossible and dangerous for user to diagnois problems that would warrant tampering with circuits. Leave to Pro/tech.
"Same Problem" -- Ghost may be due to external interference from appliances nearby. Move unit to new location

Dec 16, 2007 | Panasonic PT-53WX54 53" Rear Projection...

1 Answer

Convergence problem


sounds like convergence amps bad

Oct 23, 2007 | JVC AV-56WP74 56" Rear Projection...

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