Broken springs. Most are 1/4in diameter. The side springs are 4” not including the end loops

Note some springs are mounted on only one end, as ball guides.

Entry gate is corroded and sticky

Coin insert assembly is stuck

Test score wheel rotation. Does it rotate smoothly? Solenoid is obviously bad

Test lamp, identify bulb type.

Use variac for testing.

Check Jones plug connectors. Look for visible problems. Then connect them and test continuity for each

Test motor using variac

Identify solenoid types. Only a few have visible labels.

Test transformer