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My Samsung rear projection 42" picture is blurred with a overspill of red shadows. its like watching 3D tv without glasses.

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  • morleyd Aug 01, 2008

    thank you for your help.

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THE USUAL PROBLEM THAT YOUR SYPTOMS GIVE ARE ASSOCIATED WITH THE STK392- 090 INTEGRATED CIRCUITS 2 NEED REPLACING, UNLESS YOUR VERY TECHNICALLY MINDED ITS A JOB FOR A TECHNICIAN,COST IN THE UK ABOUT £150-00

Posted on Aug 01, 2008

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I turned My tv on and the top of the screen has red, green, and blue swirl lines, and the rest of it looks like watching a 3D movie without glasses, and the picture looks as if you took out the screen and...


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

Aug 11, 2011 | RCA D52W19 52" Rear Projection Television

1 Answer

I have a Toshiba 42H81 42 in. Rear Projection Television. The picture has shadows like you would watch a 3D image without glasses. I ran the focus on it and the vertical red has noise in it and at the end...


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

Jan 31, 2011 | Toshiba 42H81 42" Rear Projection...

1 Answer

My Sharp 61 inch projection HD tv has a blue band of shadow that dips below the image. Looks like 3D without the glasses.


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

Nov 20, 2010 | Sharp 61RWP4H 61" Rear Projection...

1 Answer

Samsung rear projector tv Model SP42Q2HL HDTV ready 1080i Looks like i should b wearing 3D glasses when watching tv, Is it game over?


No,is it not.It a repairable tv.The tv have a problems known as a convergence problems,it dead.The tv colors lines R,G,B mis alignment,have colors shadows pictures or 3D pictures look alike.The tv convergence board have dead 2 STK convergence ICS and some or all it resistors too.These parts on the tv convergence board,must be replaced to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.

Nov 12, 2010 | Samsung HCP4252W 42" Rear Projection...

1 Answer

Picture is double lined of greens and reds


You have a convergence output IC failure. You my also need a few small associated parts as well. Expect to pay $350-450 to have this fixed.

michtech

Feb 16, 2009 | Samsung HLR5667W 56" Rear Projection HDTV

1 Answer

Picture shadow on rear projection Sony big screen TV


You have 2 distinct problems that should be addressed separately. Please repost the Samsung problem. I will address the Sony problem here.

If the "shadow" makes the picture seem somewhat of a 3D one, the problem is with the convergence circuit. This could be as simple as bad connections on the pins of the convergence ICs or defective ICs. If you can solder and would like to attempt the repair, update this and I'll provide more details and instructions.

Dan

Sep 25, 2008 | Samsung HCM4216W 42" Rear Projection...

1 Answer

Philips Rear Projection TV 43PP9202 Picture looks 3D


You need to replace both convergence ICs they are STK392-120 you will also need about four 6.8 ohm 1 watt resistors. You can get replacement ICs and resistors at the following link and they provide free instalation instructions with pictures. here is the link.
http://servicemanuals.vstore.ca/

Jul 20, 2008 | Philips 43PP9202 43" Rear Projection...

1 Answer

Samsung HCM553W 55 in. Rear Projection Television - image duplicated


Hello, I am a Samsung TV repair man. What happened was one of your bulbs in your tv has burnt out. you have to contact your samsung repair phone line. how old is that tv? do you have a warranty? if you do, it might be repairable for free. I hope this info is useful!

Apr 20, 2008 | Samsung HCM553W 55" Rear Projection...

2 Answers

Looks like 3d picture


Sounds like the convergence amplifier ICs . What kind of TV and what model number and I will be better equiped to help you.

Jan 13, 2008 | Mitsubishi WS-65413 65" Rear Projection...

1 Answer

Red and Blue shadowing (Where are my 3d glasses)


There are two convergence IC's that are bad and need to be replaced, as this happens to almost every rear projectionj set ever made. They are stand up IC's , on a heatsink and they start with STK. They are soldered into place and this set has no user replaceable parts inside of it. If you have no solid state repair experience, you really should call out a trained tech to assist you in this repair. A TV set is no place to be diggin and experimenting inside of.

Sep 24, 2006 | JVC AV-48WP30 48" Rear Projection...

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