My S3's cab light started flashing 4 times (definitely 4) which the manual says is not applicable. But I guess on mine its applicable. It happened consistently after the power was first applied to the track and the engine was turned on. Four resets cleared it, and then it would not re-occur until the power was cycled again. Everything seemed to be working fine. When I turned the smoke unit off it did not happen. So I took apart the engine and tested the smoke unit. One of the resistors was way higher than the eight ohm spec. The other was fine. I decided to replace them both. I tested it for about 20 minutes and the problem has not re-occured.
Does anybody have the technical knowledge to tell me what causes the legacy board to flash the cab light 4 times after start-up?