Question about RCA P46812BL 46" Rear Projection Television

1 Answer

Picture distorted I have a RCa P46812BL with a distorted picture (scrambled picture). Any advice/solution would be appreciated, is it worth repairing??

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  • puterguy May 11, 2010

    What exactly does scrambled mean? Can you be more specific?

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  • RCA Master
  • 3,459 Answers

Projection sets have two very common problems.

The first common problem is convergence


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. This is called convergence.

When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired. Convergence problems are very common on all Projection TV sets including Sony, Samsung,JVC,Philip Magnavox,Panasonic,Akai,Pioneer, Hitachi,Mitsubishi,Zenith and others.
You can get more information and a DIY convergenece repair kit with instructions from the link below.

Here are some of the most common problems with these sets...

*Screen Looks 3-D
*Colors wont align
*Screen may look distorted or warped
*No Audio/Video - TV Shuts down - May also make a constant chirping sound

Problem #2 - Another common problem is dull or washed out video.

Your set may have one or more of the following symptoms....

*Dull looking picture
*White looking picture
*Halos around objects
*Red/Orange looking picture

Picture distorted - bb0cf99.pngYou 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 May 30, 2010

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Convergence


sounds like the problem my fisher 40" was having.

start by giving all of the circuit boards a very thorough cleaning, you can pick up crc qd electronic cleaner at autozone and other local stores. just make sure whatever you use is plastic safe, and you can use a soft bristle toothbrush to clean out any persistent crud. after everything is thoroughly clean and dry, test it.

if it doesn't work pick up a can of freeze spray from a local supplier, let the tv warm up, then use the spray to cool the components on the convergence board. see if the problem disappears. if this doesn't help, do the same to the power board.

if this does work, identify the component that is overheating and replace it.

if it doesn't work, check for dry solder joints (tedious process but worth it). this was the issue on my tv, am in the process of fixing it right now.

if you are still having the issue at this point, do a visual inspection for any capacitors that look like they have leaked or are discolored, test and replace any that are bad. do the same for other components.

this problem is more often than not caused by the convergence board or the power board, unfortunately for me and you both, i haven't been able to find a supplier of either board for my tv or yours.

hope this helps,
trin

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