Question about Toshiba 55H70 55" Rear Projection Television

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Hitachi 50fx20b i can align some of the colors on the array alignment screen but the top center and top left (as you look at it) cannot move eough to line up what can i do to repair this

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  • jimmy420 Jul 03, 2008

    cant move the blue left or right????

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Weres the ic ?

Posted on Jul 03, 2008

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Convergance iC needs to be replaced.
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Posted on Jul 01, 2008

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50FX20B- I am trying to allign the digital array and cant get the red to move,how do I move it? (the blue WILL move)


Hello,
Please replace convergence output chips in tv to solve the problem. It requires good soldering skills/ expertise and click to buy convergence repair kit for this tv that has all required parts and instructions.
Hope this will help.
Thanks.

Jun 11, 2011 | Hitachi 50FX20B 50" Rear Projection...

1 Answer

Hello, My main color were out of alignment, as per instruction on manual. I pressed the button for digital array and proceded to align the blue color, then I proceded to align the red color but I could...


The red convergence IC has failed. There are I believe 3 total convergence IC in your tv. The prefix for all three is STK392-xxx. If you can solder you can try and replace yourself otherwise you need a tv tech. With Hitachi's sometimes some critical resistors will change value as well and have to be replaced with exact equivalents. Sorry wish it was an easy solution..

Oct 17, 2010 | Hitachi 55FX48B 55" Rear Projection...

1 Answer

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

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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

Jan 11, 2010 | Hitachi 50FX20B 50" Rear Projection...

1 Answer

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

Oct 25, 2009 | Hitachi 50UX57B 50" Rear Projection...

1 Answer

The colors don't line up on my projection tv, what


U have convergence prob.it dead.Tries these websites.Tv Repair World.com,Ebay.com to buy a convergence kit,repair what in that kit.U know how to solder right?

Oct 03, 2009 | Hitachi 50FX20B 50" Rear Projection...

1 Answer

Hitachi 50FX20B 50 inch: Blue Convergence --will not adjust


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

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

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

All color guns out of alignment


Needs convergence amps replaced. Sometimes resistors burn and need to be replaced. This repair requires soldering/desoldering equip. and a trained eye, but usually can be done for 175.00-325.00 at a reputable service center. Good luck, Russmann.

Nov 01, 2008 | Hitachi 53UDX10B 53" Rear Projection...

1 Answer

Magic focus


This might also be called digital array. You might have to do the manual adjustment with the cross hairs on the screen. These, one red, one blue, one green, should all align on top of each other in a white color. If this does not work, you should call 1-800-448-2244 for assistance in finding a local service center.

Jan 21, 2008 | Hitachi 43UWX10B 43" Rear Projection...

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