Loose wire at the backbox ground braid screw is the MagnaSave ground

A loose wire found near the backbox ground braid, running back to the magnet relays, is the MagnaSave magnets' ground return. It is meant to be fastened to the same grounding point as the braid; without it the magnets will not work.

Systems

• Williams System 7

Games

• Black Knight

Related tips

• Damage after the black and white plugs were swapped
• Features misbehave with the backbox ground strap loose
• Keep the backbox ground strap tight

Source: Pinball Repair help group!! (Facebook group)