(Topic ID: 225863)

STtNG - Mode Issue

By veejay

5 years ago



Topic Stats

  • 8 posts
  • 5 Pinsiders participating
  • Latest reply 1 year ago by TheMmgs
  • Topic is favorited by 3 Pinsiders

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STTNG Switch Matrix-no balls (resized).jpg

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#2 5 years ago

Sure sounds like an opto issue. Remove all the balls from the game, and verify ALL optos show closed, repair any that do not.

STTNG Switch Matrix-no balls (resized).jpgSTTNG Switch Matrix-no balls (resized).jpg
#5 5 years ago
Quoted from veejay:

there is enough kinetic energy to knock ball 4 back into the subway towards the ball diverter, permenety out of sight of the opto and thus the trough is suddenly seeing 2 missing balls at once.

Interesting theory and the balls probably do move a little, but they should never be permanently knocked out of place as gravity should always bring it back.

Quoted from veejay:

The fix was to cut down and modify a nice new trough shim to fit the upper ball trough so that the balls want to sit forward in the V and are less inclined to roll backward.

I have been assuming that this "upper trough" you are referring to is the upper left VUK but none of the VUKs have any V notches, can you take a picture of this upper trough to help clear up the confusions as I'm wondering if you have some hack tossed in there to use a ball trough in place of a VUK assembly.

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