World Cup Soccer and later trough opto boards carry only the optos

From World Cup Soccer 94 on, all the trough electronics moved to a separate board, leaving only the optos on the trough boards, so there are no blue resistors to crack. Indiana Jones, STNG, Judge Dredd, Popeye and Demolition Man keep the older, fragile boards and mounting.

Systems

• WPC-Security (WPC-S)
• WPC-95

Games

• World Cup Soccer

Related tips

• Replacing trough transmitter and receiver optos
• Opto ball troughs from Indiana Jones on
• Full ball trough opto test in switch edge test
• Bench testing a trough transmitter board
• Games that came with Type 2 flipper opto boards
• Old and new WPC ball trough designs

Source: Repairing Williams/Bally WPC Pinball Games from 1990 to 1999, Part Three, Clay Harrell (pinrepair.com)