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Yoke Adjustment

Discussion in 'Electronic Repair' started by [email protected], Mar 11, 2005.

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  1. Guest

    I've been working on a few ATT 705s at work (they are monochrome
    terminals that emulate a few different types of terminals, but they are
    so ancient, I can only guess that those would be Wyse and VT100 and the
    like). The major problem with them, aside from the screen burn, is one
    corner or side is 'pulled' in or up, creating uneven lines of text.
    I've adjusted the yoke, moved 'magnets,' and still can not get anything
    straight or at 90 degree angles.

    Any suggestions?
     
  2. Guest

    Replace the bad capacitors in the deflection and power supply circuits.
    Then degauss the unit.
     
  3. Guest

    Considering we have quite a 'few' of these units, it might
    easier/quicker to switch boards out. The tube is the most precious
    thing, and if it's something on the PCB, I'd rather swap 'em out.

    Thanks!
     
  4. Guest

    Lets see. ALL of them are going to be old and likely have the SAME
    failing capacitors, troubleshoot it ONE time, fix many different units.
    Swapping out a board will not change any magnetism that is in the tube
    or surrounding structures. You might want to re-think what you are
    planning on doing to "fix" the issue.
     
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