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

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Where is convergence located - Panasonic PT-47WX49 47" Rear Projection Television

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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.


where is convergence located - 7859b01.jpg

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where is convergence located - 69189a5.pngttp://i.fixya.net/uploads/images/69189a5.png" alt="69189a5.png" class="h_mi" />SOLUTION #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 needswhere is convergence located - 578ba6c.jpgchanged.

578ba6c.jpg
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

Posted on Apr 15, 2011

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Rca r52wh74yx51 chasis itc222a convergence


These sets do not have convergence ICs it has convergence board most common problem with them is if you go to menu then setup and do not see convergence on menu then you have a open fuse FL231 they are located on right side of FBT flyback transfomer thier is 3 in a roll small brown rectrangler looking caps but are FUSEs it will be the one in the middle.

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http://servicemanuals.vstore.ca/product_info.php/pName/sony-kp46wt510-convergence-repair-kit/cName/convergence-repair-kits

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My Hitachi projection TV needs convergence amps. what are convergence amps?


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The convergence IC or in a sense ,amplifiers and the resistor are output resistors... if they are burning up the current going through them is spiking too high... TO me this is an indication that the "convegence yokes" are shorted. These are coils around the tubes that control convergence. I would suspect maybe that these are shorted to ground somehow. This is my first guess for this problem

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1 Answer

Converge


If the menu does not work, your problem is most likely a defective R3243 (110k 1/2watt) located near horizontal yoke connectors. Otherwise check the convergence module 9-1690, for open 1 ohm resistors. Located near large heat sink.

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