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RCA PTK169 convergence question

Discussion in 'Electronic Repair' started by Roy and Rosa, Feb 28, 2005.

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  1. Roy and Rosa

    Roy and Rosa Guest

    I hope this is not off topic. I repaired leaking tubes on this set. I now
    need to adjust convergence.
    I am using the convergence menu built into the set.
    My question is how wide and tall do I make the grid on screen?
    By this I mean : on the left side of the pattern there is a 'V' shape at the
    ends of the horizontal lines. How close to the edge do I put them? Same
    for the 'hash mark' on the vertical lines. Do I put them right on the edge
    of the screen or just off the viewing area?
    I have never done this before and I dont have a manual. I'm using the
    instructions on the label on the front of the tv.

    I covered the red and blue lenses and adjusted the green first by itsself.
    I want to make sure I'm doing it right before I do all 3 colors(it is not an
    easy adjustment process).
    I just got the green done but had to leave town for several days. Will get
    back to it soon.
    Thanks Roy
  2. Your on the right track by covering the red and blue...etc

    As far as the height and width , an inch or two of over scan is typical. We
    use a Sencore pattern generator with the large circle pattern.
    fine tune I use CNN ! The news crawl at the bottom is a good indicator for
    proper height.

    Unless someone really screwed with the adjustment pots , these adjustments
    shouldn't be that far.

    Jeff Stielau
    Shoreline Electronics Repair
    344 East Main Street
    Clinton,CT 06413
    860-664-3535 (fax)

  3. Roy and Rosa

    Roy and Rosa Guest

    thanks. your right. It wasnt too far off. I dont have any kind of
    generatior. I worked on this for a friend. I may have things a little too
    tall and skinny but it looks ok. Definately better than all green like it
    was... the coolant had shorted out the green crt board.
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