Question about RCA D61W20 61" Rear Projection Television

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RCA Projection TV Alignment

I have an RCA 91636 61" Projection TV that has a convergence problem. Quite a few months ago, we heard a snap and the TV shut off. It came right back on when we hit the power button, but it is bowed in on the top, bottom and sides. We can't adjust the green convergence, but have adjusted the Red and Blue so it doesn't look 3D, but there are no straight lines on it.

I'm capable of performing board swaps, etc, but haven't seen any references to what to change. Can you help?

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  • Rene LeBlanc Sep 03, 2008

    Which board is it? I just paid for Premium service and they said to change the STK IC, but couldn't tell me where to find it or which one it would be. I've been all through my console and don't see any chip labeled STK anything. I have 2 boards which are very accessible. SRS-810 and YPRPB-130 AV5. Either of those sound right?



    Thanks in advance.

  • Rene LeBlanc Sep 03, 2008

    As an update, it is a P61939. Thanks again.

  • Rene LeBlanc Sep 11, 2008

    I've worked with a tech how had me do voltage readings on the convergence board and says the board is performing properly.



    He thinks it is in the Horizontal PIN circuit and we are looking there. Thanks for the suggestion.



    As a follow up, my set doesn't have any STK's on it, which I assume you knew when you said to replace the whole board. My EXPERT $14.99 service could tell me nothing but to change the STK's. Couldn't tell me where the board was located or which STK's it would have. What a rip. I got better support from you for free.



    Thanks

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You would have to swap out the convergence board itself and you would need to order the part either from a delaer or through a tv repair shop.all you have to give them is the make and model of the tv and they will tell you what you need from there as far as which board etc

Posted on Sep 03, 2008

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1 Answer

How do I adjust the convergence properties on an RCA rear projection tv?


Normally on the RCA rear projection TV's you would bring up your menu and choose the Setup menu, then press OK on the remote. That menu would then have Convergence as a choice. Once that was chosen the next menu would give you the choice of either letting the TV run it's own Autoconvergence program, or you would select either Red or Blue convergence.

Choosing Red Convergence would bring up a Yellow cross-hair in the middle of the screen. If the Convergence was not correct you would see separate Green and Red cross-hairs. Once they were perfectly aligned you would again see one Yellow cross-hair.

Choosing Blue Convergence would bring up a Blue cross-hair in the center of the screen. If the alignment was out you would see 2 Blue cross-hairs. Using the Up and Down and Left and Right cursor keys you would adjust the alignment until a single solid Blue cross-hair was in the center of the screen.

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You have probably blown one of the convergence ICs. Effectively the easiest thing to do is replacing the whole convergence board, so that no soldering is involved.

Here you can buy a replacement convergence board, just select your model.

Let me know if you need further help.

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The tv have a problems known as a convergence problems,it dead.Tv have colors lines R,G,B mis alignments,have colors shadow pictures or 3D pictures look alike?The tv convergence board is dead.The tv convergence board must have replace the 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

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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.

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....

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  • Colors don't line up
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  • 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.


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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 needs the fluid changed.

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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

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http://servicemanuals.vstore.ca/

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