Question about Panasonic PT-47WX49 47" Rear Projection Television

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Rainbow ghosting We have a 42" Panasonic rear projection t.v., about 5 years old, or so. No problems til today. There is a shadow of rainbow colors separated out from each other--I imagine some sort of an alignment of colors problem. How do I solve this step by step. I'm not sure where or how to get into the convergence area I'm imagining I need to get into. thank you!

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  • Christine Kelly
    Christine Kelly Apr 14, 2008

    the set in question for miaqueen on april 2 is actually a pt-47wx42f. Will yur comments still hold true for the convergence problem?

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  • Panasonic Master
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You need to replace both convergence ICs there numbers are STK392-110 this is a easy inexpensive repair if you do it yourself. Takes about an hour beginning to end. You can order your parts at the following link and they provide free instructions with pictures and also free on line tech instant messaging while you do the repair. I am one of the support techs for them I do the instant messaging during the repair. Heres the link. You'll need two STK392-110 Convergence ICs.
http://servicemanuals.vstore.ca/

Posted on Apr 12, 2008

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The picture is "ghosting" or doubled


The tv have a problems known as a convergence problems,it dead.The tv have 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 like $300-350 for parts and labors.

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Check your convergence, Using your original remote go to the Menu, in the settings select convergence, try to align the colors to each other.

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What kind of shadowing are you seeing? Doe the picture look like a 3D movire (colors separated)? What is the make and model?

Please update this with the above info and I'll provide possible solutions.

Thanks,
Dan

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convergance problem comen problem with projection ics going bad and maybe some resistors need to take to shop or if you can solder good could do it yourself.

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1 Answer

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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
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*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
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*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

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Your tv has a convergence board problem. Two convergence IC's need to be replaced.

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You probably need to change out the semiconductors. The parts are STK392-110. There are two of them, one for horizontal and one for vertical. Search it online more.

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