Lamp types found in EM games

Most EM lamps are 6 V bayonet bulbs (#44, #47 or #55). Arcade games often add 120 V fluorescent tubes. Genco games also use 20 V #1458 lamps, some arcade games use the larger 6 V #67, and backglasses often have #455 flashers, which have a built-in bimetal switch that blinks them on and off.

Systems

• Electro-mechanical

Related tips

• EM delay relay with a lamp on it misbehaves
• Speech very faint on a type 2 board
• Speech drops out after 20-30 minutes, back after a reboot: speech chip on the MPU
• Bally lamp sockets are the weakest
• 6 V lamp fuse keeps blowing
• Repair a loose playfield lamp socket
• Common pinball lamp numbers by base type
• Dim or flickering lamp sockets

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