The Home Run rollover is clean and adjusted but the feature does nothing.

Gottlieb Batter Up: Home Run feature doesn't work

Cause: The Home Run (H) relay, at grid 6E on the schematic, is reached through three paths, any of which can have a dirty switch.

Checks

• Path 1: the WH-BL wire from the H coil runs through the two Home Run rollover switches and then score motor switch 1C. Clean and adjust 1C, then test.
• Path 2: the H relay's own normally open switch (WH-BL) then the normally closed motor switch 2B (WH wire). Clean both.
• Path 3: through the vari-target; clean all its contacts and the OR-WH switch to the U (vari-target reset) relay, which also ends at motor 2B.

Fix

• Clean and gap the switches found dirty.

Systems

• Electro-mechanical

Related tips

• Gottlieb 1954 'Double' games

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part Two, Clay Harrell (pinrepair.com)