leadfootdriver

I have an original Brushed Parkzone J3 Cub Rtf and it won't turn on! I pulled it out of storage on Friday and got it all ready to go I looked it all over nothing is missing the batteries charged and held but it won't turn on! I forgot that this is exactly why it's been stored for the past couple years. I can't figure out why it's doing this I've never plugged the motor to esc leads in wrong, I've only crashed it once and it flew just fine after having to replace the motor, prop shaft, gearbox, landing gear, fuselage, cowl and tail feathers I have no idea whatsoever why it won't turn on its very frustrating can someone please help me??