Hey dudes, I found the fix...
Took me two hours of messing with the nailer, dismantling it and reassembling it...
There's a little micro switch, near the fan, which cycles the fan when you cock the nailer by pushing its nose to the material to be nailed... If the spring and wheel assembly, which triggers that switch gets bent ever so slightly, either way, the gun won't function... Unscrew that trigger with the little roller on it, and straighten it out.. then push an ever so slight downward curve in it, assemble the nailer, and test it...