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Hello Mike, I have a problem with friend's Mitsubishi VS-50501A with a convergence problem. I replaced the STK391-020 ICs, all 3 of them and the picture still looks like 3-d, and still has a bow tie, hour glass looking image. What do you think it might be? is there anything else I can try? Please let me know

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  • g_ovalle Feb 15, 2009

    Thanks for your solution, I will try this, and see if it fixes the problem, I appreciate your help.

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Hi!

Did you adjusted(callibrated) the screen after the replacement? Have you checked the solder joints of the resistors connected with the ics. Please check the resistors connected with the stk ics.

Posted on Feb 15, 2009

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Have you adjusted the convergence on the tv again after replaceing the parts?

Posted on Feb 15, 2009

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Please check pico fuses that might blew off and causing no power to new STK-391-020

Posted on Feb 15, 2009

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How can I download the manual for the Mitsubishi VS 50501A


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My Mitsubishi VS-50705 has an all over 3-D effect.


Yes it sounds to be convergence issue .

You have convergence problem in your tv . You need to replace convergence IC . YOu can get from the link below .

Convergence ICs

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The IC number is STK392-110 .

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Mitsubishi VS-50501A convergence problem. The image looks like a bow tie and the convergence will not align. This TV only has manual convergence. I already replace the STK391-020 ICs, it has 3 of them....


These sets need to have all three colors - RED - BLUE - GREEN - lined up correctly on the screen in order for the picture to look normal. When its out of alignment the video will look 3-D, wavy, distorted, etc. Most of the time you just need to adjust your convergence in the menu. If you cannot adjust it in the menu - then your convergence is broken and needs to be repaired.

Convergence problems are very common on all Projection TV sets including Sony,Samsung, JVC, Philip Magnavox, Panasonic, Akai, Pioneer, Hitachi, Zenith, and others. You can get a convergenece repair kit wiith instructions from the links below.

Here are some of the most common problems with these sets...

Problem #1) Convergence

Yours may have one or more of the following symptoms
  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted or warped
  • No Audio/Video - makes a chirping sound.
Problem #2

Another common problem is dull or washed out video.
Your TV2_bing.gif may have one or more of the following symptoms....
  • Dull looking picture
  • White looking picture
  • Halos around objects
  • Red/Orange looking picture

You can see some more examples and find a fix here
bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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Replace the convergence ICs your model uses two STK392-040 Convergence ICs. You can get replacements at the following link with instructions.
http://servicemanuals.vstore.ca/

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They are IC8C01 and IC8C02 and they are STK392-110 convergence ICs. you can get replacement ICs at the following link and they provide free instalation instructions with pictures.

http://servicemanuals.vstore.ca/

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I suspect you have a bad convergence ic bad the letters 0n the ics start with stk replace ic you will have a good shot that will fix it. you do need to be able to solder . be careful. there are 2 ics replace both .

mcm electronics for parts

thanks jay

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1 Answer

Mitsubishi VS-50501A convergence problem


Projection TV sets have several common problems listed below.

Problem #1) Convergence

Symptoms:

  • Screen Looks 3-D
  • Colors wont align
  • Screen may look distorted
  • No Audio/Video - makes a chirping sound.
Example Photo:
5f6e85c.jpg
Problem #2 CRT Fluid has clouded over.

Symptoms


  • Dull Video, Washed out
  • White/Bright looking video
  • Halos around objects
  • Red/Orange looking
Example Photo:
ee1ca68.jpg

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

bb0cf99.pnghttp://www.fixya.com/support/r2861467-solution_video_looking_whiteish_dull

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