Question about Akai PT4799HD Rear Projection Television

1 Answer

My pic has double vision and contrast wont fix it...........can u please help

Posted by gail piche on

  • 2 more comments 
  • dadd09 Nov 29, 2007




    I see double vision, writtings are seperated and in three different colors. I tried with the remote to fix it but with a lost owners manual, I hav'ent a clue where to start.


  • Anonymous Nov 29, 2007

    In addition to triple vision the right side is ok with problem being worse as you get to the left side

  • Anonymous Feb 10, 2008

    is wave all time &has double image

    I can move the the convergencias blue & red

  • smith_jean Jul 31, 2008

    Our TV has a 3-D effect. Bought at Costco 4 years ago. We don't have a tech in our zip code. Can a unexperienced person fix this issue?

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1 Answer

Anonymous

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  • 2 Answers

Sound like a convergence problem.
check out this site.
i did a self focus in the service mode which corrected my problems, but lost the self focus function out of the service mode, so enter at your own risk, i can live with the right picture without the self focus feature,  but am inquiring on forums how to get it back.

Posted on Jan 08, 2008

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Tmtmail.co.ukmy samsung projection tv has double vision and i dont know how to amend the lens can yu please help thank you

double vision in a rear projection tv has several reasons. one is convergence magnets are out of tune. u need to tune them which is back side of picture tubes. u please observe that which color is producing the double vision. the lens are firmly fixed & therefore need not to adjust. other option is to adjust the convergence of tv by going to service mode by remote.
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Picture has ''double vision'' with red.

This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Screen may look distorted
  • TV shutdown - does not display video
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
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Hdtv that has double vision

There are two common problems with these sets.

Problem #1) Convergence

Symptoms:
  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull
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Pic is double vision and seems too small for tv

Convergence is dead,need be replace,know how to solder right?Tries websites.Tv Repair World.com or Ebay.com,for ICs and resister.
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wel if the ghost vision is still there try and set the brightness and contrast from your xbox 360 console
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http://www.avforums.com/forums/showthread.php?t=384717&page=8
this will fix it i have the same tv and it fixed my i have a prob my tv has gone dark and can not c the pic i had to put the brightness up just to c it
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Double Vision

My Dad had a Hitachi rear projection with same problem blue and red were fine green was out of allignment and could not fix. Problem was the acual projector inside TV the cost for repair was more than TV was worth went out bought plasma.
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