Question about Hitachi 57F500 57" Rear Projection HDTV-Ready Television

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Will not focus

Hitachi 56'' rear projection all of a sudden went out of color allignment . worse near the top of screen. magic focus gets half way through the green and then stops. how or who can repair.

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  • Hitachi Master
  • 3,459 Answers

This is a common problem. Its called a convergence failure.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted
Problem #2 CRT Fluid has clouded over. Symtoms
  • Dull looking video
  • White looking video
  • Halos around objects
  • Red/Orange looking video

You can see some examples and find a fix here...

will not focus - bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

Posted on Feb 03, 2010

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1 Answer

I get a split up of red and green in a wave at top of screen


The convergence ICs and resistors are the most likely things to cause that. You can get the convergence repair kit for the DP14G hitachi( 53UXX10B) at the following link which contains the parts and instructions.
http://www.tvrepairkits.net/

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Replace the two convergence Ics they are STK392-110 if your model is the 53FDX20B you can get replacement Ics with installation instructions at the following link.
http://servicemanuals.vstore.ca/

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lupe0112,

I'm no expert, but I think that you have a problem with the convergence of the 3 color guns. I've been working on a similar problem. As a first step, have you tried "Magic Focus?" The Magic Focus button for the Hitachi 53UDX10B is at the left of the small front panel controls that also include your RCA composite and SVideo connectors. Let the set warm up for about 20 minutes (as recommended by the user guide), and then press the Magic Focus button. When you press the Magic focus button, the set will auto align the 3 color guns. If this doesn't fix your problem, unplug the TV for at least 4 hours and try again.

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It looks like the STK chips need to be replace for fix the distorted colors.
You can download the service manual from here: http://www.eserviceinfo.com/downloadsm/11792/Hitachi_60SX12B.html

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Blue convergence IC bad...have both IC's changed..insist on
STK394-160E upgrade part # CZ 01341 Hitachi brand.....Original part is STK392-110......Also, check B+ feed resistors next to
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Wait until warm and try Magic focus

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sounds like you need the convergence kit part number X480295

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