Help with circuit for Plasma Stick 2040 W

A shame, indeed. But, in theory, could I try soldering something to one of the pins even if not exposed properly? I found this post where it’s suggested any pin could be powered on and off with something like x = machine.Pin(10, machine.Pin.OUT) x.on() x.off(). Is this true? The thing is I’ve already bought two Plasma Sticks and need to make them work no matter what! Thanks.