Question about Mitsubishi VS-50501 50" Rear Projection Television

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Mitsubishi VS-50501A convergence problem

I've got two Mitsubishi VS-50501A TV's built into an arcade game. One of them had the convergence collapse into a wavy image (none of the colors were aligned). I replaced all three of the convergence IC's on the convergence board and the convergence is now a slightly more synchronized 'bow-tie'. The colors will not respond to the remote when I try to adjust the convergence. I swapped the board into the other TV and the image was almost perfect and I was able to move the crosshairs with the remote. When I returned the original convergence board to the 'good' TV the blue is now doing what all the colors are doing on the 'bad' TV. The red crosshair moves but not the blue. I am assuming that the problem lies somewhere on the main board but I don't have the slightest clue where to start looking. Any advice is greatly appreciated.

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  • Anonymous Dec 20, 2008

    I had a guy look at mine and he said the problem is with the main board and I was told good luck on finding the parts - this is the ic part number I believe you need three of them.
    STK391-020

    Anyone know where you can get a main board for a Mit vs-50501a rear pojection tv?

  • Anonymous Dec 20, 2008

    I had a guy look at mine and he said the problem is with the main board and I was told good luck on finding the parts this is the ic part number I believe you need three of them.
    STK391-020

    Anyone know where you can get a main board for a Mit vs-50501a rear pojection tv?

  • mark May 11, 2010

    I have same model, same prob. I need the conv. ic location numbers and part numbers to replace these parts as I have no service manual. do you have manual and/or schematic, etc to possibly email to me. hate to go purchase when Im not sure if item is worth fixing !!

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  • Mitsubishi Master
  • 3,459 Answers

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:
Mitsubishi VS-50501A convergence problem - 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 aMitsubishi VS-50501A convergence problem - bb0cf99.png.

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

Posted on Mar 25, 2010

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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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