(Topic ID: 232109)

Dirty Harry issues

By dskeys63

1 year ago

Topic Stats

  • 10 posts
  • 4 Pinsiders participating
  • Latest reply 1 year ago by dskeys63
  • No one calls this topic a favorite


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    #1 1 year ago

    Upkicker fires intermittently on it's own, also goes into ball search intermittently when ball is in random holes,also intermittently doesn't sense all balls in through. Multi ball also intermittently works......

    #2 1 year ago

    Go into TESTS-SWITCH EDGES and let it sit there for a few minutes. Any switch activity?

    What if you give it a hammer-fist on the playfield?

    #3 1 year ago

    Sounds like as if there is sometimes a problem with the 12v power for optos! Check in switch edge test by moving cables under pf!

    #4 1 year ago

    I don't have the schematics for this machine. What connector powers the optos? Thanks.

    #5 1 year ago
    Quoted from dskeys63:

    I don't have the schematics for this machine.

    https://www.ipdb.org/search.pl Download the manual here.

    LTG : )

    #6 1 year ago

    Are there any dim or flickering LEDs on the driver board.

    #7 1 year ago

    All 12v power from and at the opto board has no issues. Tapped on CPU lightly on different chips, game reset when tapped on main CPU chip. Only reset two times. Problem is still there also. Is it possable a chip can be flaking out on the CPU or opto board? All connections have no issues with slight movement.

    #8 1 year ago

    That PIC chip: put your thumb in the middle of it, hold pressure there and rotate your hand in a circle.

    #9 1 year ago

    I did... no change. I also noticed that sometimes when the multi ball is lit, it doesn't give multi ball when ball is present.

    #10 1 year ago

    Fixed.....some hack doesn't know how to solder and clean flux away. A little cleaning and running a razor knife between the opto solder connections.

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