Change pop bumper lamp sockets from wedge to #47 bayonet

Always fit a new pop bumper lamp socket; old ones are corroded. If the game used 555 wedge bulbs, switch to #47 bayonet sockets: they sit lower in the bumper body, so the bulb doesn't scorch the underside of the cap.

Systems

• Electro-mechanical

Related tips

• Wedge sockets in older wide-body pop bumpers: the bulb may not clear the cap
• Playfield lamp fuse blows when one pop bumper fires: lamp socket shorting
• Bally lamp sockets are the weakest
• Repair a loose playfield lamp socket
• Gottlieb: lamps dim noticeably each time a coil fires
• Dim or flickering lamp sockets
• Lamp types found in EM games
• 6 V lamp fuse keeps blowing

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