After the game is moved it boots, but the trough does nothing and the game reports that all trough switches are open and to check 12 V power to the playfield; many switches are missing in test.

After a move: trough error and no 12 V to the playfield from a hidden loom plug

Cause: An inline connector buried inside the wire loom running to the playfield had come loose. All the board-side plugs looked fine.

Checks

• Check the fuses with a meter even if their LEDs are lit.
• Measure 12 V at the playfield end of the harness.
• Follow the playfield loom and feel inside it for inline connectors, not just the plugs at the boards.

Fix

• Reseat the loose inline connector (and secure it so it cannot pull apart again).

Games

• Pirates of the Caribbean

Source: Pinball Repair help group!! (Facebook group)