LED flicker eliminator adaptor kit Bally/Stern
LED flicker eliminator adapter kit for classic Bally and Stern pinball machines.
Converting early Bally or Stern pinball machines to LEDs (light emitting diodes) is easy and effective for general illumination (GI) lamps, but because of their very low current draw, LED switched or controlled feature lamps flash on and off every 8 milliseconds and create an annoying flicker.
This 3 piece set of adapter boards economically correct the problem and work with all types of LED lamps.
They are compatible with any generation of classic Bally or Stern pinball machines using the AS-2518- 17, AS-2518-35, M-100, or M-200 CPU board set and a dedicated lamp driver board.
LED adapters are available separately for Auxiliary Lamp Boards AS-4518-43 or AS-4518-52 under related items below.
Each of the controlled lamps in the backbox will have a small, striped wire that only connects to a single lamp, and a single braided 'common' wire that runs to all controlled lamps on the backbox lamp board. This 'common' wire is where you want to attach the alligator clip as close to the hinged side as possible. Use caution not to connect onto your GI lamp wiring, which has two braided wires, each of which connects to multiple lamps.
Occasional flickering LEDs after installation of these adapters is usually the result of a marginal, or incorrect, SCR installed on your lamp driver board.