A-18617/A-18618 WPC Trough Opto (pair) – 5 or 7 IR

Sold as a pair: an infrared emitter board and an infrared phototransistor board. Available in two versions – choose the one that matches your machine.

Faithful, electrically and visually accurate replicas of the original WPC trough opto boards, built using modern, high-quality components and matched routing.

7 IR version (A-18617/A-18618) fits:
Corvette, The Flintstones, No Good Gofers, Red & Ted's Road Show, The Shadow, World Cup Soccer '94

5 IR version (A-18617-1/A-18618-1) fits:
Attack From Mars, Cactus Canyon, The Champion Pub, Cirqus Voltaire, Congo, Dirty Harry, Indianapolis 500, Jack*Bot, Johnny Mnemonic, Junk Yard, Medieval Madness, Monster Bash, NBA Fastbreak, No Fear: Dangerous Sports, Revenge From Mars, Safe Cracker, Scared Stiff, Star Wars Episode I, Tales of the Arabian Nights, Theatre of Magic, Who Dunnit

Technical features
• Matched infrared emitters and phototransistors
• Quality Molex connectors
• Built using modern components from reputable manufacturers
• Authentic, schematic-correct design – component placement, connections and routing match the original board and schematic
• Fully tested

Why choose these boards?
Trough opto boards are now decades old, and ageing infrared emitters and phototransistors are a common cause of trough faults such as random ball deployment. Even after a repair, you're relying on ageing parts and often damaged pads.

These boards are a clean, drop-in replacement that behaves exactly like the original, but built with fresh components and clean copper. For restorations, long-term reliability or machines that see regular play, new boards are often a better choice than continuing to patch ageing originals.

Replica boards made by MC Circuit Works – not original Williams/Bally parts, and not made or endorsed by them. Part numbers A-18617/A-18618 and A-18617-1/A-18618-1 are shown so you can check compatibility.

Shipped weight (inc. packaging): ~65g