Question about Hitachi 50GX30B 50". Rear Projection Television

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Hitachi 50" - 50GX30B

Ghosting on laft side, tried Array alignment and can adjust all 9 '+' signs except the middle left will not move far enough. The red '+' sign will not shift far enough to align with the others. Only Blue and Red can be adjusted, cannot move the Green or White '+' signs. The top row also seemed to be scewed and the 'box' around the '+' signs is actually leaning to the right so the adjustments are close but not exact due to the skew. Any ideas to fix is appreciated.

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  • lenny61 Mar 10, 2008

    Top half of screen is double image bottom half of tv is ok

  • Anonymous Dec 03, 2008

    uable to align the blue in the center and in upper left corner

  • johnm15 Dec 06, 2008

    the top middle and top right are out of alignment and sideways in the blue colour. the bottom left has the same problem in blue also. # 2,3,& 7 in red and blue will not fix

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One of your convergence IC's has burned out and needs to be replaced. A good rule here is to go ahead and replace both STK392-110 IC's with the new improved STK392-150's. If you have never replaced convergence IC's and realigned convergence circuits, allow a qualified tech to handle it for you.

Posted on Aug 14, 2007

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You will need to replace the convergence IC inside the TV set.

Posted on Aug 13, 2007

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My Viewsonic PJ860 projector (aka Hitachi CP-S860W) has developed a condition in which there is a yellow vertical stripe down the right edge of the screen and a blue vertical stripe down the left side of...


It does sound like this is an alignment problem of the blue LCD or a problem on the main board controlling it. I am not sure if this is a field adjustable unit. A call to the authorized service center should provide that answer.

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Colors do not line up on my tv ( left side of sreen looks like 3D) digital array "+" are only white on right side.


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 photos of convergence problems.

42d3683.jpg

7859b01.jpg

e87380c.jpg
Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

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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I can't align red or green bulbs with the digital array, how can I get them to move left/right they only move up/down.


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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You need to change convergence amplifiers. Should be no problem for a professional

Apr 08, 2009 | Hitachi 50FX20B 50" Rear Projection...

1 Answer

Alignment will not work corectly, still have blue and yellow show


Make sure the Size and Linearity adjustments are not cranked too high. This can affect the ability to move side to side. Center green first and then red and blue. Some pattern generators can produce a horiz shift. Also, check for a horiz start position adjustment. If blue is way off from Red and Gren then you have a bad amp.

Mar 23, 2009 | Zenith Televison & Video

1 Answer

Hitachi 50GX30B I need to align Digital Array no original remote


Unfortunately, it looks like you will need the original remote. I found one at www.remotes.com Give it a try. Good luck.

Dec 13, 2008 | Hitachi 50GX30B 50". Rear Projection...

1 Answer

Shadows on left side of screen,right side has no shadows


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 projeciton 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 photos of convergence problems.

42d3683.jpg

7859b01.jpg

e87380c.jpg
Here is a quick test....

Using your original remote go-to the settings menu then goto the convergence section.

Try to adjust the red and then the blue convergence.

You should be able to move RED and BLUE in all directions - up, down, left, and right. And you should be able to get the grid straight.

If you can't move them in all directions or cant move them far enough your convergence chips are bad and should be replaced. This is a common problem.

Note: If you TV has as flash focus or magic focus button only try pressing the button. If it fails to fix the convergence your need to fix it. See below for a fix

69189a5.pngCONVERGENCE SOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses.
This is a a fairly easy DIY job if you are handy and can follow directions. You can get complete repair kits from TvRepairKits.com or click here. They have put together DIY repair kits that include the OEM parts and step by step photo instructions for each repair. If you are not handy or can't follow directions we would suggest calling a shop.

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Convergence issue


try fixing the convergence 2 after your've aligned the convergence 1 - the second (accessed via the set up control) let's you adjust on 9 different axis to align the red and blue tubes to the green. you select which + sign you want to adust by pressing the corresponding number for the + ie 1 for the top left, and 9 for the lower right corner.

good luck (note - you cant change the green only the red and blue, if the whole edge is a mess try moving the image (you need to be in zoom mode, and then access the position adjustment via the pitcure set up screen.

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Hitachi 50fx20b


convergance iC needs to be replaced.
http://serviceman.site88.net

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The red square on the digital array alignment is moving up and down,but now side to side


convergence ic bad
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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