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Conversion problems color seperating picture is bowed at top and bottom of screen

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What model number. Likely your conversion amplifiers and a resistor or two have gone out. Most Toshiba's use STK392-110 which can be replaced with STK392-120. You always replace both even if only one was bad.

Posted on Jul 10, 2009

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Center bow on picture top and bottom with 1" black showing


Projection TV2_bing.gif sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - TV2_bing.gif makes a chirping sound.
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Mar 06, 2010 | Toshiba TN55X81 55" Rear Projection...

1 Answer

Screen is bowed on top and bottom. What could be our problem? Picture, letters & words blurry.


go to hatch screen adjust all colrs to make white color boxes , also adjusts linear lines

Dec 31, 2009 | RCA Televison & Video

1 Answer

Picture is bowed at top and bottom picture perfect in middle of screen; colors seperating in corners convergrence is perfect


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

Nov 01, 2009 | Mitsubishi WS-55809 55" Rear Projection...

1 Answer

Colors have separated. and top and bottom af pictures are bowed. i have a sony kp-46s55. its about nini years old and it was free. currently the colors are separated and the top and bottom of the pict


nbad convergence ic , this need to be done by a profecional tv tech , because need to check for the pico fuse and resistor around the area

May 08, 2009 | Televison & Video

1 Answer

Colors seperating and Screen bowing


The convergence circuit is not working. There are bad solder connections on the sweep board and a small fuse is open. this is not easily done yourself unless you have a technical background but an RCA tech can fix this easily.

Mar 25, 2009 | RCA D52W20 52" Rear Projection HDTV-Ready...

1 Answer

Tv Colors are bad



You have a convervence problem. You will need to replace both convergene chips and possibly the resistors. You can get more information and a repair kit with instructions from www.TvRepairKits.com 

Jan 09, 2009 | Philips Magnavox 9P6034C 60" Rear...

1 Answer

Pt-47wx49e convergence problem


I just replaced the 2 convergance chips, but it did not seem to fix the problem. I then tested all the resistors that feed the convergence chips anf there was a 2.2 ohm fusable blown. IT was R7050 on mine. That seemed to fix it so that I could adjust all the colors through the convergence 2 screen. There seems to be a slight bow near the bottom when you look at the c2 screen, but not noticable when you are watching a picture. Since I got this broken, I am not sure how perfect it should be.

If anyone can send me the service manual, I would appretiate it. Thanks.

Oct 10, 2008 | Panasonic PT-47WX49 47" Rear Projection...

1 Answer

Philips Magnavox 51MP392H Rear Projection Television


are you getting sound, was it moved laterly, did you just get it from somone, did it get wet, does it make clicking noises, was the picture color/ convergence blurring before this, were the colors slowly seperating such as red/blue/green?, did the picture bow on top and bottom or sides prior to tihs, was there anything note worthy prior to the blank screen.

generally its IC convergence problem with the larger philips projection TV's however I need more info on your TV, also size make model # anything you can provide gets us a more narrowed solution.

hope this helps....

Aug 17, 2008 | Philips Magnavox 51MP392H Rear Projection...

1 Answer

Picture is bowed down from top left corner to top right corner and bowed up from bottom left corner to botton right corner. Colors are seperated a little in corners and middle top and middle bottom.


Convergence ICs are faulty what is your model number? I can post which ICs you need and where you can get replacements that come with free instalation instructions so you can do the repair yourself

May 07, 2008 | Televison & Video

1 Answer

Rca projection


Conversion problem most likely. Do your conversion controls work both colors in all 4 directions.

Jan 04, 2008 | RCA P52926 52" Rear Projection Television

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