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I have a Hitachi rear projection tv (Model C5068FS). The lines are curvy at the edges. I can also see shadows on the edge of the picture (mainly in red). I tried pressing Magic Focus, but this did not

Hitachi projection TV - model C5068FS

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6ya6ya
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Posted on Jan 02, 2017

  • 4234 Answers

SOURCE: Hitachi 43VWX10B Rear Projection Television - color adjustment problem

Either the pins on the convergence ICs need to be resoldered or the ICs need to be replaced. These are large black ICs attached to a heat sink and should be marked STKxxx. Resolder first. If that does not resolve it, replace the ICs.
Dan

Posted on Mar 17, 2008

  • 11800 Answers

SOURCE: My Hitachi 61swx12b projection TV

The convergence board has failed and will have to be refurbished or replaced - very common problem. The best way to fix it is to buy and use a repair kit like
http://www.tvrepairkits.com/xcart/home.php?cat=1645

Posted on Nov 30, 2010

Ecollier2012
  • 3459 Answers

SOURCE: I have a blue shadow

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

Posted on Dec 22, 2010

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