Hitachi 57F500 57" Rear Projection HDTV-Ready Television Logo
Posted on Apr 14, 2009
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3-d like picture

Blue shadows

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  • Contributor 11 Answers
  • Posted on May 07, 2009
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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.
3-d like picture - 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.3-d like picture - 2c07611.png/>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 need3-d like picture - 578ba6c.jpg changed.

578ba6c.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.

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  • Expert 71 Answers
  • Posted on May 04, 2009
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Just to clarify, it sounds like what you are saying is that the image appears to duplicate in either red or blue along the edges of the image (especially white lettering and probably increasing along the boarder of the TV). This is resolved by converging your TV. Convergence will drift normally on large screen projection TV's over time or through moving them. The Hitachi 57f500a has a feature called "Magic Focus" (pg 36 in your manual) which will auto converge the image. If the auto converge feature doesn't work, on page 37 in your manual, it explains how to converge manually. If you do not have the manual, I have the image of the pages below. If for some reason this doesn't work, please provide additional info and detailed prior to rating the help.

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Related Questions:

0helpful
1answer

There is a blue shadow (especially around on screen graphics, lettering etc.) when in HD mode. I attempted to align the colors through the color convergence but the blue alignment did not work. I also...

No.This tv have a convergence problems,it dead.The tv have R,G,B colors lines mis alignments,have colors shadows pictures or 3D pictures look alike?The tv convergence board,must be repaired by repacling 2 STK convergence ICS and some or all of it resistors too.To fixed the tv convergence board,to solved the tv picture convergence problems.The shop,will cost u like $300-350 for parts and labors.
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Picture has blue shadow/trail? sony KP-53HS10

This sounds like a bad blue CRT (cathode ray tube) The repair on this is a major job. Beyond the tube replacement it would then require some convergence alignment and possibly some setup on the other related service adj. such as geometry. You may want to get an estimate from a reputable local repair company.
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Blue and red shadows on the TV picture

open up the TV then clean up the silver screen and the 3 light bulbs inside its probably just dirty.
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Distorted Color and geometry of Picture

replace stk 392-110 ( or stk 392-150 same number) , check resistor 2.2 ohms for open or burn beside STK IC's
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Picture has a blue shadow

Hi,
Seems convergence out IC is fried in TV so it gives blue shadow.

Check out Convergence Out IC which you need to replace in TV, if you have enough experience of repair of big TV, necessary tools and know basic electronics.

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Blue shadows appear to be behind white objects

TV shows large red spot in middle of tv when dark show are on, you can see it more.  Now blue spots on upper right side too.  Spend way to much on this tv to have these kinds of problems only after 3 yrs.
1helpful
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Porjector

Hi there

Is it a LCD or DLP ?

First try using a different cable. If the problem stil occurs this might be a faulty Mainboard - which would need either repair or replacement.

Does the discolouration show in the startup screen as well ?
0helpful
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Blue shadow

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