One arrow insert lamp goes out and stays out after a new socket, a new bulb and even a different lamp driver board. Lamps on either side of it work.
One insert lamp dead after nearby work: bad pin in the lamp driver IDC connector
Cause: A bad contact at one pin (pin 28 here) of the .100 insulation displacement (IDC) connector on the lamp driver board.
Checks
- Check for voltage at the socket in lamp test, and jumper from a working lamp's drive wire to see if the bulb lights.
- Wiggle each pin of the lamp driver connectors while watching the lamp.
Fix
- Replace the IDC connector with a crimped Molex housing and pins.
Systems
Games
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Source: Pinball Repair help group!! (Facebook group)