The game reports a switch error and none of the drop targets (three-bank or single) register in switch test, though shorting the connector pins makes them register.
No drop target switches register: 12 V feed lost at a loose connector
Cause: The 12 V feed to the drop target switch boards was missing on the playfield side. It runs through the interconnect board; here a connector near that board had worked loose.
Checks
- Measure the 12 V feed (grey-yellow wire) at the backbox connector and again at the drop target boards.
- If it is present in the backbox but not on the playfield, check each connector and the interconnect board traces along the way.
- The two drop target units are fed in a chain; if one works and the other does not, look between them.
Fix
- Reseat or repair the loose connector so the 12 V reaches the targets.
Systems
Games
Related tips
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- The interconnect board (Banzai Run and later)
Source: Pinball Repair help group!! (Facebook group)