A flipper coil gets hot, smokes or smells, or the solenoid fuse blows when a flipper is held up.

Flipper coil burns or solenoid fuse blows: EOS switch

Cause: The flipper's normally closed EOS switch is not opening at full stroke, so the low-ohm power winding stays on alone.

Checks

• Hold the flipper up by hand and check the EOS contacts open.
• Look for burnt coil wrappers.

Fix

• Adjust the EOS so it opens when the flipper is fully energised; file its tungsten contacts with a metal file.
• Replace the coil if it is burnt.

Systems

• Electro-mechanical

Related tips

• Flipper EOS switch: gap, checking and cleaning
• Weak flippers on an EM: adjust the end-of-stroke switch before buying coils
• Zipper flippers won't close: burnt close solenoid
• An EM flipper coil is two windings
• Rebuild EM flippers before fitting stronger coils
• Bally and 1948-62 Williams (50 V) EM flipper coils
• Stronger flipper coils for Gottlieb EMs
• Bally zipper flipper solenoids changed at Capersville

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part One, Clay Harrell (pinrepair.com)