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Brunswick Electronic Triggering Board


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  • Brunswick Electronic Triggering Board

    This one has been driving us nuts for a while now. It started about 2 months ago when I noticed that the spring was missing on the safety microswitch on the rake shaft(safety lock-out, or as the manual calls it the "rake-down switch"). Installed spring (oops). Starting having safety lockouts when shotgun rake goes down. Machine blacks out, and led lights on board telling you rake hit something. Doesn't look like anything wrong with rake travel, and both the rake down switch (safety) and rake up switch (trigger micro in elec box) look like they are adjusted to the 1/16" like installation manual says.

    It started happening a lot, with the spring installed on the safety switch, and with spring removed. We changed triggering board, and noticed that the trace that opens the motor-start relay when lockout occurs was getting used so much, that it was getting hot and started to lift off the board. Same machine symptoms occurred with the new board. Now, the trace on the new board seems to be getting hot.

    Now it seems like the machine doesn't black out AS MUCH with the spring OFF (but the micro NEVER closes without the spring installed.)

    Is there a way to test this board, and the proper timing of the closing and opening of the rake switches?? Both micros check out ok with ohmmeter.

    When I've been on the machine and saw it happen, ball comes through, rake goes down, but solenoid never fires. Machine blacks out, led goes on (like its supposed to). But nothing blocked rake, and safety switch was closed (spring installed). Turn breaker off, then on, and solenoid fires. This seems to happen in bunches, and then machine will behave for a while.

    This is on a converted A2, Brunswick AS90 scoring with take data relay board, single-type brown Brunswick triggering box on the lane. Bruns elect triggering board circa 1995 (rev A board, I think).

  • #2
    Re: Brunswick Electronic Triggering Board

    Hi, just a thought that there maybe a pin hanging up the pitcushion or a rake shock going bad and also a pitcushion linkage binding due to wear.

    I have 44 lanes with automatic triggering with the springs installed on the rake down switch and have never exprienced the trace problem that you have spoke of. However, we have had to replace several of the relays on the module that fires the sylnoid.

    Doug [img]/content/btubb/images/%%GRAEMLIN_URL%%/usflag.jpg[/img]


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