Question about RCA P46921 46" Rear Projection Television

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Blue, green, and red colors all off

I have a RCA 46 inch TV Model #P46921 that recently started having issues with the convergence being off. There is red, green, and blue lines are all messed up. Sometimes you can fix it by unplugging the TV and plugging it back in. I tried going to the menu of the TV and adjusting the picture by going to the screen menu and then going to "Adjust Projection TV" so that I can fix the red, green, and blue colors...but my TV no longer offers this on the menu. It has in the past but it doesn't any more??!! Does this require a repair person to come out and fix it and how much on average should it cost??

Posted by indyz on

  • happy35 Nov 18, 2007

    We have a 72 inch rca rear projection television. I can go to the adjust projection and the red will let me go from side to side b ut will not let me go up and down. Please can u give me a suggestion on how to fix this problem?

  • Kimberly Castro
    Kimberly Castro Feb 09, 2008

    omg....i have the exact same does an option like "adjust projection" no longer be offered to you? where can i go to get it on my menu. red, green and blue are slightly off. i use to be able to get a grid of some sort... help



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I would suggest having a repair person come out to your place to fix this problem. I believe the convergence IC are going or have gone bad. I would estimate a $300 - $400 dollar repair bill.

Posted on Sep 22, 2007


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My convergence is not good how i can adjusting it

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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). Below are more details for both items. Also, complete repair kits with instructions and repair support are avail from site such as

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.


69189a5.pngSOLUTION #1

For more more examples and find a fix using this link on Fixya

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.

TV set after fluid change



You can see some more examples and find a fix using this link on Fixya

May 22, 2011 | RCA P46921 46" Rear Projection Television

1 Answer

The red blue and green needs setting how do you get to it through the menu ? Dont have #6 on screen section. Weve done it before but forgot.

Projection TV sets are known to have two common problems. The first problem that is common to these sets is convergence failure. When this happens the TV will usually look 3D, Wavy/Distorted, etc. It may also shutdown and blink an error code.

The second common problem with Projection TV sets is dull video, halos around objects, white looking video, or red overpowers the screen. This is commonly caused by the fluid in the lens being clouded over.

You can find more details and solutions here on Fixya at the following link below. Or click HERE


Oct 24, 2010 | RCA P46921 46" Rear Projection Television

1 Answer

RCA Projection TV Model #p46921, Has bowing effect of pictures

Go to Menu then setup look for convergence if you do not see convergence on menu then you have a open FUSE FL231 it is on right side of FBT flyback transfomer there is 3 of them small brown rectrangler looking caps it will be the one in the Middle.

Jan 31, 2009 | RCA R52WH73 Projection Television

2 Answers

RCA 46 inch convergence problem

AM sorry, but can you provide your model number TV and chassis please?. I will tell you location parts. Thank you

Jul 14, 2008 | RCA P52926 52" Rear Projection Television

1 Answer

RCA P46921. Just changed flyback.

First, this assumes nothing else is going on to cause it. Here's what I did. Go to the 'green grid' via the v76 menu and go through the alignment there. Notice that there are red letters, blue letters, and a green grid. While you are in this screen, adjust the red, green, and blue focus watching the individual color's item until they are in focus. If they won't focus here, they won't focus and you have something else wrong (what I do not know). Then, return to normal programming, then select menu on the remote, then screen, then adjust projection tv convergence both horizontal and vertical crosshare. That ought to get it.

Mar 16, 2008 | RCA P46921 46" Rear Projection Television

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Small picture with lines

check these two resister also R19702= 750k, R19703= 750k

Dec 20, 2007 | RCA P46921 46" Rear Projection Television

1 Answer

The image is gone and is now only three lines green red and blue. How to fix it?

Hi, Your problem is what you call vertical defflection circuit section, it is very rare that you would see the three line in the midle of the screen because they have protection narmaly to shut down the set's.
How to fix this, well you must locate the vertical ship, to see what it is, it narmaly say's on it LA7830 or LA7833 or LA7838 and Bla Bla Bla look for LAxxxx , ( a small ic flat standing upward, about 11/2" and 3/4" in hight and about 1/8" in thinkness) if it look's burt when you know what to do, I would also check to see if other parts that supply's the voltage to this ic's is burt, narmaly 12 to 30 volt dc., It may be also be located on a seperat board with the convergence, these or two big ic's starting with the part # STK, not to shure on you unit, don't have the schematic, but may be a board with lot's of Transistors , narmaly now these day's no one repair board, they just replace them, this is why it cost so mutch to fix.

I hope this help's

What About Bob
Timmins, Ontario

Apr 09, 2007 | RCA P46921 46" Rear Projection Television

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