Flippers and some 50 V coils (such as the lock kickout on F-14) do nothing, but the playfield fuses look good.

Flippers and lock kickout dead with good fuses

Cause: Loss of the 50 V supply from the flipper power supply board (long thin board at the far right of the backbox), or on Big Guns and later the auxiliary power driver board.

Checks

• Check the 50 V fuse on the associated power supply board.
• Check the separate 50 V fuse mounted on the metal plate below the boards.

Fix

• Replace blown fuses and repair the flipper or auxiliary power board.

Systems

• Williams System 11
• Williams System 11A

Games

• F-14 Tomcat

Related tips

• Burning smell, then flippers, pops and eject all dead: broken flipper EOS switch
• One flipper does not work at all
• Flipper power supply board (Fire! and earlier)
• One or both flippers weak
• Both left flippers lose power: broken solder joint on the upper flipper coil
• Interconnect board and flipper power board fuses
• A-bank coil not working
• Whole A or C bank of coils dead

Source: Repairing Williams System 11 Pinball 1986 to 1990, Part Three, Clay Harrell