Question about RCA P46920BL 46" Rear Projection Television

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Screen has red, blue and green colors

Screen has all three projection colors in different spots on the screen. The screen is concaved on top and bottom.

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Re: Screen has red, blue and green colors

It is normal for a rear projection TV or monitor to slowly drift slightly out of convergence as the CRTs age. If any sudden drastic change has happened then there has been a component failure on the convergence board. Usually it's the large ICs and maybe some caps and low wattage resistors as well. Could be any of many things. A professional service person has the equipment and know how to check for bad parts, and usualy also some spare parts lying around to replace and check for change. Most common fix is replacing some of the STK chips, which aren't very expensive, but it could be the convergence board itself, or the CRT fluid. In short, kicking it wont help, playing with the menus either. This is going to cost you... consult a Repair person and get an estimate for the repair. Good luck

Posted on Jan 23, 2006

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Three pictures red green & blue and it looks concave


Install the Sony type 1 convergence repair kit available from www.tvrepairworld.com the kit includes the components and the cd with instructions.

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This is a very common failure on Projection sets. Its called a convergence problem.
You may have one or more of the following symptoms.
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.
No Audio / No Video - Makes Chirping Sounds
You can see some examples and find a fix here...

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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That repair only repairs the issue of the convergence option missing from the on screen menu. If thats what your problem is then the ITC222A convergence option missing repair kit at the following link should repair the issue. The kit contains the fl231, DL231, CL230 and the CD with detailed instructions.
http://www.tvrepairworld.com/

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1 Answer

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The supply for the convergance circuitry is off the flyback (high voltage) transformer. There are three fuses to the direct right of the transformer. One of these is probably open. Also re-solder or replace the rectifier diode off the blown fuse. This should solve your problem.

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This is a convergence oroblem. First question is do you have the convergence option in under setup in the customer main menu?... if you dont you may have the very common fl231 fuse problem; i have wrote a article on this under the tips and tricks section. this is a very simple inexpesive repair. If you do have the "convergence option" then you may have to replace one of three cuircit boards

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This is what is known as convergence. a projection tube ussally has three picture tubes.. red green blue. they all have to align. the concave picture indicates complete loss of convergence or convegence power supply. First question on these sets Do you have the convergence option in the customer menu under setup. if you do not this is a indication of the common "FL231 fuse problem" and inexpensive simple repair. I have wrote and artilcle on this under my tips and trick section. If you do have the option then next does autoconvergence work. in you case i would not think it work. under blue and red manual convergence does the crosshairs move. if not then this is indication of convergence power supply board. if they move at all this may indicate a convergence amplifer problem.

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thats usually a convergence IC failure, Are you able to move the red and blue colors in the convergence adjustment menu?

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1 Answer

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Greetings joanne7,

The issue you are having could be caused by your television needing the convergence adjusted. During production your televison has the three picture tubes that are converged to form a single image on the screen. Over time these can come out of adjustment.
If you go to this link http://download.jazel.net/misc/filecache/b8/b89bca4c8b740315d378e8ed030461c5_1227-517SeriesOwnersGuide.pdf and check pages 57 and 58, it gives you a very detailed guide on adjusting your convergence. I am aware this model number is slightly different than yours, but I own a 47" Mitsubishi and this is the exact procedure we use to do our convergence so I am confident it is fairly universal.

I hope this helps!

Dorothy
Go Ahead. Use Us.

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Picture has 3 images, all different colors (red-blue-green) screen looks concave in the middle top & bottom


This is what is known as convergence..(very common)... first question DO you have the "CONVERGENcE" option in your setup menu?.... if you dont there may be a special fuse issue... if not then more than likely it is what is known as convergence power supply issue. you have complete loss of convergence?

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1 Answer

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replace fuse looks like cap next to flyback transfomer FL231 it will be the one in the middle.there are 3 of them next to FBT.

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