(Topic ID: 138583)

Royal Rumble Ball Trough HELP request


By Outsidedge

4 years ago



Topic Stats

  • 6 posts
  • 3 Pinsiders participating
  • Latest reply 4 years ago by Outsidedge
  • Topic is favorited by 1 Pinsider

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#1 4 years ago

Hey all,
I am working on a DERR and the ball trough is not being recognized in switch test at all. All switches are good. I checked them all as far as continuity.
In switch test it does not even react to closing any of the trough switches. The game also says "6 balls missing" in normal mode. I see no hacks that make me suspicious ... what gives?
Seems like the entire row of roller micros are not even being seen???

Any ideas?

#2 4 years ago

First make sure the wiring harness that bundles all switch wires at the connector. These wires often get pinched. Chech the connector also.

#3 4 years ago

Will do! Will check tonight. i assume you mean the connector near the tough itself. Visually is did not look comprimised... But I will get my trusty meter out to test this evening. Also continuity to CN8 at board(I think thats the one anyway) at the board

#4 4 years ago

Yes, at the trough. To the left of the out hole there is an idc connector for the switch harness wires.

#5 4 years ago

How about your shooter lane switch? All trough are on the same column, shooter lane switch is also there (switch matrix)

#6 4 years ago

Ahhhh.... found Q54 transistor is bad. That should do it! Also, since I had my meter out.. I looked at many more and found that Q39 was bad.... knocker and (some) flash lamps ... guess that explains when I try to put a new bulb in a number of them they just blow.. and the knocker wires were snipped. Guess that's like fixing that sound your car is making by turning up the radio.

Good stuff.

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