EM transformers almost never fail

Blaming the transformer is nearly always wrong. A failed one is obvious: it is wax-potted, and a burnt winding leaves melted, charred wax. Check fuses, switches and coils first.

Systems

• Electro-mechanical

Related tips

• Moving an EM transformer to the high tap
• High tap: a little more coil power from the transformer
• EM transformer high and normal tap positions by maker

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