Regular maintenance is key to prolonging the life of your AMT-78 controller.
The you are facing (audio glitches, coin counting issues, or motor failure) amt-78 user manual
A: Physical shocks from transportation can cause hidden damage. One technician found that a cross-country move had vibrated the soldered connection of the coin acceptor's signal pin until the "copper foil broke". This is a common issue with long-distance moves. Regular maintenance is key to prolonging the life
3.3 Safety and compliance