I'm wonder if there is something shorting something on the board.
If you have a multimeter, could you test if there is any voltage between the two eyes when
the quirkbot is turned on.
The right eye (the metal ring that is) is ground and the left is power.
If you don't have a multimeter an alternative way if testing if there is power is to connect a led and the resistor with crocodile clips between the eyes like this:
[right eye] ---> [resistor 100 Ohm - 1k Ohm] -----> [(short leg of led)-(long leg of led)] -----> [left eye]