The game would tilt in the middle of a ball now and then; after one tilt it would not come back on at all. The fuses tested good and power reached the fuses.

Game tilts mid-ball, then won't power up: cold solder joints on the fuse block

Cause: Cold, cracked solder joints at the fuse block, so power wasn't getting through the fuse holders.

Checks

• Pull each fuse and test it out of the holder.
• Measure on both sides of each fuse holder, and inspect the solder joints on the fuse block.
• Also check the tilt switches (door, pendulum, playfield) for a gap that's too small.

Fix

• Replace the fuse block (or resolder its joints) and fit new fuses of the correct rating.

EM games have line voltage at the fuse block and in the cabinet; unplug the game before working there.

Systems

• Electro-mechanical

Games

• Odds & Evens

Related tips

• Check fuse ratings before the first power-up
• Finding why a fuse blows: start with which circuit
• No lamps, no coils or no power: tired fuse holder

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