wow another G&G with a broken gear. They must make those things out of corn.
Is your fuse blown? I you may have blown it by trying to fire with the broken gear. This would put load on the motor/battery and heat the fuse up to a breaking point.
Also make sure your motor hight is not jammed right in that could be stopping ti as well. But that would usually cause a *tick* sound when the trigger is pulled.
I tell you what though, G&G has cured me of ever buying a clone gun.