I removed solder from pad JP4 and placed the two legs of a 3.3v incandescent bulb in opt. bulb sockets. The bulb does not light. If I connect pads JP4 the onboard LED lights. Also if I place the two legs of the incandescent bulb to 3.3v and gnd the incandescent bulb lights. Is there something more I need to do? Thank you very much.
What is the rated bulb current?
Did you solder the connections to the bulb?
Did you enable the bulb?
What bulb current value did you set?
Details are in the Getting Started guide.