Question about Samsung HCM5525W 55" Rear Projection Television

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Blue gun out of focus

I have a Samsung HCM5525W; No convergence problem, but the blue gun needs to be sharpened.
Can this be done manually or in the service mode?
Thanks.

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  • nickprescott Apr 22, 2009

    Gun focus adjustment...Thanks; I figured that but where?


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There is a manual focus adjustment above and between the red and green gun, located in the front of the TV behind the panel; It is a small black box about 3X3" . This has all three adjustments .

Posted on Apr 25, 2009

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There is a spot inside the set to adjust focus for each color. I don't recall a focus adjustment for samsung in service mode. Blue is usually the weakest color & tube may just be losing life. Also if oil in tube is discolored it will put a haze of your picture

Posted on Apr 21, 2009

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Related Questions:

1 Answer

Got a samsung hcm5525w tv that i cant adjust the blue convegance, the red i can adjust, and using the auto focus only gets trough the green.


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

Problem #1) Convergence

Symptoms:

  • Screen Looks 3D
  • Colors wont align
  • Video may look distorted

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

http://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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your set has 2 Big Black ics STK392-110s if you are having troulbe getting the blue to move you have a bad resistor 3.9 ohms you may need to change both ics STK. I use the 180s, and if its 020 i go up to 040.

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this is an idication that eather the convergence ic's or convergenc ic output resistor have blown

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Image


Samsung parts for convergance problem
http://www.partstore.com/Part/Samsung/Samsung/BP9500142E/New.aspx

Convergence amp ic bad
http://home.earthlink.net/~oleg.filippov/ConvergenceFix.htm
http://cmpalmer.blogspot.com/2006/11/fixing-my-own-tv-part-ii.html
Sony Convergence
http://www.techlore.com/blog/entry/19694/Sony-Convergence-Repair-My-Sony-TV-has-a-distorted-picture-/
http://www.techlore.com/article/19631/Sony-Convergence-Procedure/

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You are going to need a full convergance alignment to rectify this issue.

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