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1 WPC Specific Issues
See WPC Specific Issues.
2 Game-Specific Issues
Medieval Madness Castle: Worn parts make the castle towers lean. Spares are hard to come by, so fixing this one often requires some DIY effort.
Troll carriages: Gravity can loosen the collar from the cage, and cause binding on the up or down movement. You can re-peen it with a cold chisel. Or braze it. The collar is much thicker than the cage so welding won't work, you'd melt the cage.
Another common problem is a broken wire on the troll head target. Easiest is to take the whole carriage out of game. Remove the bolt holding it to plunger, unplug the connector. Lift up and wiggle out, lean to one side so long part clears playfield hole. Remove nut on plastic piece and remove. Remove troll target. Cut cable tie. Resolder wire good. Check both wires and diode. Reassemble. Put on new cable tie. Install back into game.
Draw bridge is acting up: Check the pivot points, they get peened by ball hits and can distort and bind. A bit of work to take apart, they can be flattened or filed to make a smooth pivot point again.
Draw Bridge motor works but the bridge will not raise or lower properly creating an error with credit dot: Go to test/solenoid menu and check drawbridge motor. Lift the playfield and watch the gear mechanism turn. Check the plastic gears in the drawbridge mechanism. The plastic gear can break off some of the small teeth leaving a gap in the gear that causes it to fail. This part is can be ordered and replaced. This repair can be done from the underside of the playfield but will require an extra pair of hands. The green "moat" will have to be removed and then the bridge and door mechanism loosed and pulled downward. No desoldering/soldering is required.
The gear mechanism does has several small "e" clips that have to be removed and replaced. The replacement part comes with and fixed to the gear shaft. It is not visible from the picture, but the shaft as flattened tips to ensure proper orientation of the end caps that screw on either side to activate the on/off switches for the motor. This repair takes about an hour.
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