Question about RCA Projection Televisions

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Projected image is too large for screen

I own an RCA P56740bg projection televison. i have two problems. the first, is that both my red and blue convergence are off, as well as the image being warped at the top and bottom. i am almost positive this is because my reflector screen is warped. the second, and more urgent problem, is that the projectors create an image too large for the tv. words are cut off at the sides. it appears as though the top and bottom are normal other than the distortion from the first problem i mentioned. PLEASE help me out. it makes it very difficult to do anything with it, if the picture is warped, and cut off on the sides.

thanks much
--Brian L.

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Good Day Brian;

The warped, too large picture is the same problem, the TV has a convergence problem. ln today's electronics the first thing that should be done on any electronic device is to, reset, unplug TV from the a/c outlet for at least 4-5 minutes then plug back in. If no fix; Your TV has a circuit problem. RCA has three common problems that could cause this condition; the most common is a fuse near the fly-back, IH-VT, the convergence power board or the signal board.

Always, call a factory authorized service dealer if you are not familiar with repairing electronic equipment that contain HIGH VOLTAGE, just for your own safety.

Good Luck, Big Irish.

Posted on Jun 21, 2008

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You can see the red blue and green lines on my tv it is like it is out of sync


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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....

  • 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.


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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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1 Answer

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IT SOUNDS LIKE A PINCUSHION PROBLEM. IN MOST CASES IT IS DUE TO CAPACITORS GOING BAD ON THE BOARD. OTHER TIMES SOME TV'S HAVE LARGE MICROCHIPS THAT RUN THE PINCUSHION AND COLOR SYNC. HOPE THAT HELPS.

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have convergence rebuilt........

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1 Answer

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Most of the screen cover for sets older than 8 years have been discontinued,get the size of your screen leaving about 1/8 of and inch around the screen,you can get your local lumber or hardware store to cut pexie glass to fit,get velcro and apply to sides of screen to attach glass,make sure to sand any sharp sides before attaching.

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do they look like these:
· http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
· http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

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