Question about Hitachi 51SWX20B 51" Rear Projection Television

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Shaded color tinting everything in pink and green. I've tried Magic Focus (5). It's a Hitachi 51SWX20B.

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  • 56 Answers

Sound like a common problem where the coolant for the tubes has become contaminated. It is possible to replace the coolant yourself and can be a much cheaper alternative to getting repair shop to fix.
do a search for replace coolant 51swx20b

Posted on Oct 21, 2013

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Posted on Jan 02, 2017

experttv
  • 203 Answers

SOURCE: hitachi tv magic focus does not work

Your problem is the convergence circuit. This is very common in CRT projection sets like yours. There are a couple of IC's that need to be changed and possibly some resistors. A good repair shop will run you $400-$500 to do the repair.

Posted on Oct 28, 2008

Ecollier2012
  • 3459 Answers

SOURCE: we own a Hitachi 51swx20b and is now experienc ing

Your TV most likely has one or more possible problems.

Problem #1: Convergence Chip Failure ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem

  • 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.
701cb04.jpg
77ea520.jpg
f0900cb.jpg
Here is a quick test....

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

2c07611.pngSolution #1

You need to replace the convergence chips and convergence resistors. Check the site www.TvRepairKits.com. They have put together a kits for most models. If you don't see a kit for your set send them a quick note and they will put one together for you. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, etc.


Problem #2 CRT Fluid is Cloudy

Projection TV tubes have a liquid coolant that is used to keep them from overheating. After many years the coolant in the blue and green tubes will become cloudy and cause the screen to look dull, red/orange, etc. You may even see halos around images.

Picture of a set that needs the fluid changed.

578ba6c.jpg
TV set after fluid change

65af323.jpg

2c07611.pngSolution #2


What you will need to do is replace the coolant and clean the crt. You can get a repair kit from www.TvRepairKits.com that includes replacement coolant, photos. instructions, etc.

Posted on Apr 03, 2009

Ecollier2012
  • 3459 Answers

SOURCE: When doing Magic Focus on

Your TV most likely a convergence failure. ( common problem )

Here are some of the most common symptoms and example photos of a convergence problem


  • 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.
Here are some photos of convergence problems.

3dc9420.jpg
645fba6.jpg
0dcec37.jpg
Here is a quick test....

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

0667c5f.pngSOLUTION

You will need to replace the convergence chips and possibly some convergence resistors and pico fuses. Its a fairly easy DIY job or you can call in a pro. If you want to do the repair yourself check the site www.TvRepairKits.com. Their kits include a photo instruction guide, original OEM Sanyo STK chips, convergence resistors, pico fuses, thermal paste, email/phone support, etc.

Posted on Jun 20, 2009

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1 Answer

Green tint


Go to a channel that is in black and white and turn color all the way off.

Screen should be a black and white or gray color.

If green there is a fairly easy way to adjust--let me know what you find and I will tell you how to attempt the adjustments.

Feb 18, 2012 | Hitachi 57S700 57" Rear Projection HDTV

1 Answer

My Model TV # is 51swx20B. Two days ago the picture started having a lot of green in it and no blue. What is the repair needed.


Do adjustments on focus block. Will have to open front panel access door, focus block blue will be on left, green will be on top. Top screen bottom focus. Turn clockwise to increase, counter clockwise to decrease brightness. Turn the color all the way down on menu where it's pure black and white and make adjustments for perfect black and white picture, then when you adjust color, it will be perfect.

Aug 09, 2011 | Hitachi 51SWX20B 51" Rear Projection...

1 Answer

Have an Hitachi 51swx20b. The colors are not aligned and magic focus will not work. Vertical and sharpness is grayed out...


Ur convergence it dead.U know how to solders?Buy a convergence kit to replaced parts.Websites Tv repair World.com Tvrepairkits.com.

Dec 16, 2009 | Hitachi 51SWX20B 51" Rear Projection...

1 Answer

Magic focus error Hitachi 52


The model number you have selected here does not have magic focus--if you really want a answer post the correct model number.

SD TECH

Dec 12, 2009 | Hitachi 52LDX99B 52" Rear Projection...

2 Answers

Hitachi 51SWX20B Convergence problem


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 or warped.

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 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.

Its a fairly easy fix on the Hitachi sets.

You can get a repair kit that includes all the parts from www.TvRepairKits.com. The kit includes a photo instruction guide, original Sanyo STK chips, convergence resistors, etc.
Everything you need to fix it yourself.

Jan 28, 2008 | Hitachi 51SWX20B 51" Rear Projection...

1 Answer

Loss of color picture


I have a blue-ish yellow ghost tint which just appeared on my 51" 51SWX20B made July 2002. Did the magic focus got a number 5 at the end. Did you get a number when you did the magic focus?

Dec 01, 2007 | Hitachi 51SWX20B 51" Rear Projection...

1 Answer

Hitachi 61SDX picture got dim shows Code 3


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.

Nov 17, 2007 | Hitachi 61SDX01B 61" Rear Projection...

1 Answer

Bad picture


convergance ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm

Oct 26, 2006 | Hitachi 57SWX20B 57" Rear Projection...

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