Lights, displays and sound can be a small accent on an older machine or the entire personality of a modern one. When evaluating an electronic pachinko machine, test these systems separately instead of accepting “it turns on” as proof that everything works.
Document the startup state
A seller video should show the machine from power-on through normal idle operation. Look for missing display areas, repeated error messages, unusual flicker and obviously silent or stuck effects.
Sound is part of condition
Speakers can distort, buzz or fail. Modern pachinko is also inherently loud, so a fully working machine may still be unsuitable for a thin-walled apartment without volume control or other home-use configuration.
Decorative lamps vs functional indicators
Not every light serves the same role. Some are purely theatrical; others can communicate machine state or faults. Before replacing lamps or LEDs, identify whether a failure is local to the light or a symptom elsewhere in the circuit.
Parts can be title-specific
Molded light assemblies, display modules and control boards may be tied to a particular model. If a spectacular licensed ornament is missing, price replacement availability before buying the machine.