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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Convergence


I'm assume you are referring to a non adjustable convergence option. this will occur when you have a damaged convergence chip set that is located on either the PC board or the convergence board. The location of the affected chip will vary from model to model but, in most units, this can be fixed by replacing the convergence board or chip.

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Location of the convergence circuit board on KP46WT510


they are located on the board on the left when looking in the rear of the set ( Brown Board) you can get the convergence repair kit at the follwing link which has the ICs , the six pico fuses and four of the feed resistors, plus it comes with instructions, Here's the link.

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

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Toshiba 42h82 convergence resistor and pico locations


yes better.  you need schmatic. servicemanuals.net.

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


The convergence amps are usually located on the extreme right side of the chassis looking in from the rear of the set. Located on a large heat sink. If you respond to this post with your correct model number I will post the correct ICs for your model, and you will need to replace the six convergence resistors as well.

Jul 13, 2008 | Televison & Video

1 Answer

Convergence problem


Its located in the front behind the speaker panel there s a nother small access panel the convergence board is right there on the right hand side up front.

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I would change all convergence IC not just the one that holds the red. You will need the schematic to get the resistors location.

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RCA R52WM24 52 in. HDTV convergence IC location


the rca itc222 chasis uses no stk the convergence is controled with transistors... the convergence amp board is located above the main signal board(green board)... it can be identified as the one with several heat sink fins on it. FL231 is related to convergence.. there has been a problem with this fuse when it blows the processor doesnt know it is a projection set so it turns it into a regular tube tv. Here at the shop we have found number one reason this fuse blows is poor solder connection on the flyback. So replace the fuse and reflow the solder connection on the flyback and around that area also the horizontal transistor and then see if that doesnt fix the problem.. if you have an more trouble ..... willie@fordtv.com

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3 Answers

Convergence chips


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

Feb 11, 2008 | JVC AV-48WP30 48" Rear Projection...

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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