One flipper does nothing. Its coil had burnt and the sleeve melted, but after a new coil and cleaning the cabinet button switch the flipper is still dead.

Right flipper still dead after fitting a new coil: bad EOS switch

Cause: The end-of-stroke (EOS) switch on that flipper was faulty.

Checks

• With the game on and a game started, measure for about 48 V DC at the banded (diode) side of the coil lug to ground.
• If voltage is present, follow the ground side of the circuit, including the flipper relay on the solenoid driver board.
• Inspect the EOS switch contacts and check it opens and closes cleanly; replace it if the contacts are burnt or pitted.

Fix

• Replace the faulty EOS switch (and repin the solenoid driver board connectors if they are loose).

Systems

• Bally MPU AS-2518-17

Games

• Mata Hari

Related tips

• Flippers dead though fuses and EOS switches are good
• One flipper dead with fuses good
• Check a flipper coil for heat damage by its sleeve
• Flipper coil diodes must be fitted the right way
• What the flipper end-of-stroke switch does
• Flipper stays up after the button is released
• Flipper machine-guns when the button is held
• Flipper weak, dead, or machine-gunning

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