Just got a apple IIgs today and I am going to need some help with it since this is my first apple II.

I got it plugged it in to the monitor that I got too ( apple IIc green screen) and also the floppy drive keyboard and mouse flipped the switch on the back and the light turned on for a second and the blipped off. nothing else.

I opened it up and there are no cards in it just the board and the power supply.

Any ideas or am i missing something big here?