The Battlefield kicker stopped firing, even in solenoid test, although it fires when its transistor tab is grounded. At the same time a whole lamp row and a lamp column went out.

Kicker dead in coil test plus a lamp row and column out: reseat the CPU to driver ribbon

Cause: A poor connection in the ribbon cable between the CPU and the power driver board, which carries the solenoid and lamp control signals.

Checks

• Ground the driver transistor tab briefly: if the coil fires, the coil, wiring and power are good.
• When several unrelated outputs fail at once, suspect the shared ribbon cable before replacing parts.

Fix

• Reseat (or replace) the ribbon cable between the CPU and power driver boards.

Systems

• WPC-Security (WPC-S)

Games

• The Shadow

Related tips

• Trough eject and left sling dead together: reseat the CPU to driver ribbon
• Slingshot also fires an outlane magnet: ribbon cable not fully seated
• Resets from worn power connectors between transformer, driver and CPU boards
• Lamp matrix connectors on the driver board
• Reseat the ribbon cables before chasing odd behavior
• GI string dead with a scorched connector
• GI out because the GI connector burned
• GI connectors on the driver board

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