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I bought a Hitachi 50GX30B 52" tv used. It had perfect color when I brought it home. After a few weeks the colors changed to a yellow and blue shadows. I have tried to corect this through menu but I am unable to change it back. PLEASE HELP..

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  • Anonymous Jun 07, 2008

    yellow and blue screen

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Can you please post me a picture of what your picture on the set looks like cause what you describe sounds like a convergence

Posted on May 06, 2008

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How can that blue shadow be fixed in the picture.


This tv have a convergence problems,it dead.Tv have colors lines R,G,B mis alingment anywhere in the picture,having colors shadow pictures or 3D pictures look alike?The tv convergence board is dead,the 2 STK convergence ICS and some or all of it resistors are dead too.These parts on the tv convergence board,must be replaced to solved the tv convergence picture problems.The shop,will cost u like $300-350 for parts and labors.

Dec 15, 2010 | Hitachi 50GX30B 50". Rear Projection...

1 Answer

My Hitachi 52 inch Projection TV video goes one


hitachi 52' tv...the blue color is off...you can put magic focus on and it still want move the blue back where it needs to be

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Hitachi 50gx30B Pincushion problem


Please let me know in which direction the picture is distorted. Does it bow in from the top and bottom or left and right?

Thanks,
Dan

Mar 06, 2009 | Hitachi 50GX30B 50". Rear Projection...

1 Answer

We have blue ghosts with brilliant colors


This sounds like the most common thing that fails on projection TV's, regardless of the brand. The convergence circuit has two STK392-110 IC chips mounted on heat sinks to drive the convergence yokes. They typically last anywhere from 5-10 years, then they fail. A more robust part is now available (STK392-150) as a direct drop-in replacement. My shop has installed these IC's in hundreds of projection sets and had fewer than 1% of them come back with repeat failures. Also check the following low-ohm feedback resistors to make sure they did not go out of tolerance:
  • RK42: 2.7
  • RK46: 2.2
  • RK58: 3.9
  • RK52: 3.3
  • RK50: 3.3
  • RK54: 2.2

Jan 25, 2009 | Hitachi 50UX52B/53K 50" Rear Projection...

1 Answer

Blue and Yellow shadows


Google "HItachi Convergence Circuit" and you will see that it is a very common problem. Looks like TV repair guys get $400 to fix it. The parts will set you back $15-$50 but there is some complicated soldering to do.

I am going to repair my own...but I have a lot of experience in soldering

May 05, 2008 | Hitachi 50GX30B 50". Rear Projection...

1 Answer

Color ghosting


KIT10 $29.50
Repair Kit for Hitachi convergence Chassis DP-14G
KIT10 Includes 2 pcs STK392-150 , 1 each of the following 1W axial lead fusible resistors:


http://www.digitalhome.ca/forum/showpost.php?p=564268&postcount=220
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html

Nov 11, 2007 | Hitachi 50GX30B 50". Rear Projection...

2 Answers

Color Allignment


press menu on the remote and then u will be able to align the blue

Oct 30, 2007 | Hitachi 50GX30B 50". Rear Projection...

3 Answers

Hitachi 50" 50GX30B PJTV


Solution:
Your TV has a convergence problem. Here are some of the most common symptoms.

Screen looks 3D
One or more colors can't be adjusted when using the convergence menu.
Screen is bowed in but stationary.
Here is a quick test....
Using your original remote go-to the tv settings then goto the convergence or magic focus section
Try to adjust the red and then the blue convergence.
You should be able to move them up, down, left, and right.
If you can't move them in all directions your convergence chips are bad and should be replaced. This is a common problem.
You can get a repair kit that includes all the parts from www.TvRepairKits.com.
They have put together a kit for the Hitachi TV sets.
The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc.
Everything you need to fix it yourself. Its a fairly easy fix on the Hitachi sets.

Oct 20, 2007 | Hitachi 50UX57B 50" Rear Projection...

1 Answer

Hitachi 52 projection tv


use the advanced options page and reset the factor blue and red convergence defaults then do re apply the auto color defaults color at first it seemed very red (which is good because red was the missing factor in the green picture) but after reseting all the color and tints to the normal ranges I then reset the color auto correct again and all seems fine.

Jan 22, 2007 | Hitachi 50V710 50" Rear Projection...

1 Answer

Digital Array?


I have the very same problem. Was there a solution to landfill2004?

Nov 13, 2006 | Hitachi 50GX30B 50". Rear Projection...

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