Question about Projection Televisions

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Picture distorts. The perimeter bends towards the center. The perimeter colors like a rainbow.

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Would need to know the model number in order to give you any suggestions could be a pincushion problem or could be convergence circuit failure. Can you post a pic of the screen along with the model number?

Posted on Apr 09, 2008

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The top and bottom of the picture makes a rainbow effect toward each other in the center of the screen++++++++TV. model 3 ws55807 it's a 55 inch screen the problem occurs all the time. I have no TV repair...


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

Feb 08, 2011 | Mitsubishi WS-65807 65" Rear Projection...

1 Answer

The picture projects the image with concave lines on the edges. I'll explain further: somehow the picture is distorted in a way that bends the four edges of the picture in a curved-concave manner so that...


Projection sets have two very common problems.

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. 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 and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

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

*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

bb0cf99.pngYou 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 26, 2009 | Mitsubishi VS-55705 55" Rear Projection...

1 Answer

TV Picture Distorted


You need new convergence ICs Call your locally tv repair shop or find someone that knows how to work on CRT projection tvs.

Aug 29, 2008 | Panasonic PT-53TW53 53" Rear Projection...

1 Answer

Ctc 195 series rear projection T.V. piture quality


Can you post a picture of what the video is doing? It shounds like a pincushion problem, but it may be convergence amp as well. A picture could clarify it for me so I would know which direction to assist you in.

Feb 23, 2008 | JVC AV-56WP74 56" Rear Projection...

1 Answer

Distorted picture


i was just working on a set with the same problem .. i found a east west correction curicit with a falty transistor. something in that cuircit has failed.

Jan 05, 2008 | RCA D52W20 52" Rear Projection HDTV-Ready...

2 Answers

Distorted picture


The RCA P52960 uses the PTK195 series chassis. There are 2 main boards at the bottom of the set and above the board on the right (when viewed from behind) is the convergence power supply board. This board usually has a big black IC on it, labeled STK730-010 and bolted to a metal heat sink. Chances are, that IC has burned out and stopped working. Replacing that IC should restore your convergence. If you do not have experience replacing IC's in projection sets, allow a qualified tech to handle it for you.

Aug 29, 2007 | RCA P52960 52" Rear Projection Television

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Hitachi projection tv model 3 51gwx208


Do you mean that at the top of the picture, the red color has shifted downward, bowed towards the center? If that is what you see, one color suddenly bows toward the center on any side of the picture, then it means that one of your convergence IC's has burned out and needs to be replaced. It is a good idea to go ahead and replace both STK392-110 IC's with the newer improved STK392-150's. If you have never replaced convergence IC's and realigned the convergence circuits in a projection TV then allow a qualified tech to handle it for you.

Aug 05, 2007 | Hitachi 51GWX20B 51" Rear Projection...

1 Answer

WS-55809 - Video pinched in center, distorted, yellow/blue/red glow


This doesn't sound like a programming issue. I had a very similar problem about 6 months ago and I fixed problem. I had cold solder joint on the video power board. It was the board in the middle. The power supply was to the right. The video board had a driver with a bunch of legs. About 7 solder joint where cold or loose. I solder the board and my mitsu wide screen was fixed. Hope this helps.
Andy

Aug 22, 2006 | Mitsubishi WS-55809 55" Rear Projection...

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