Although a PS-2 engine start it like a PS-1. Turn the voltage to 12 volts or more on startup for 10 seconds and then throttle back to below 9 volts and cycle it into forward. Try another transformer and charge the battery. One of the 3 should fix it.
A PS-2 engine should be using a 6 volt bulb. Check the voltage in the socket. Is this a older 256 with a 5v board?
