Question about Hitachi 50UX57B 50" Rear Projection Television

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Hitachi 50ux57b the color was messed up (green and blue ghosting) so i tried to fix it but it has analog settings and i can't figure out how to get them back to factory.

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  • chuckdogg May 26, 2008

    seems off alighnment red green colers

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Check menus for default settings, or check the manufacturers website. Even calling the manufacturer is a good idea just to help you get through the menus

Posted on May 29, 2008

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1 Answer

50" hitachi 10 years old has blue and green colors


Your TV most likely has one of two 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
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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

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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

Dec 12, 2010 | Hitachi 50UX57B 50" Rear Projection...

1 Answer

The tv image is showing in three colors....Almost ghost like but in three colors. I checked my connections and tried my blue ray player and the image is still messed up....I did press the magic focus...


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.
You can get a repair kit with parts and instructions from www.TvRepairKits.com

Sep 23, 2010 | Hitachi 53FDX20B 53" Rear Projection...

1 Answer

Set will not power on


Replace both of your STK ICs STK392-110s use 120s or 150s Mats has them 1-800-628-1118
ck Low ohm resistors in same circuit 1.2ohms -3.9ohms

May 29, 2010 | Hitachi 50UX57B 50" Rear Projection...

1 Answer

Colors on the screen are messed up with ghost HITACHI


Its not clear what kind of tv you have but it appears to be older rear projection tv with three picture tube. This problem does occur due to the convergence board going bad. Needs professional help to repair unless you know a lot about soldering ICs. Check out at www.fixurtvs.com for more answers on this problem, repairs and costs.

Feb 26, 2010 | Projection Televisions

1 Answer

Tv duplicate image


your guns are off and need to be adjusted. your 3 guns (red, green and blue) are off and that would explain the funny colors and shadows. Have a tv tech come out and have a look, they can fix it for a reasonable price.

Oct 20, 2008 | Projection Televisions

1 Answer

Hitachi Mode; 53UDX10B


http://serviceman.site88.net/index.htm

Jul 06, 2008 | Hitachi 50UX57B 50" Rear Projection...

1 Answer

Hitachi 50ux57b


The green and blue ghosting is a convergence problem that is either bad connections at the convergence ICs or defective ICs. If you can solder, try resoldering the ICs. If that fails to resolve the problem, replace them. These ICs are large black ICs attached to a heatsink. They should be marked STKxxx.
Keep us posted.
Dan

May 13, 2008 | Hitachi 50UX58B 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 50UX57B 50 inch Rear Projection smearing...


try this

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.

Sep 18, 2007 | Hitachi 50UX57B 50" Rear Projection...

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