Taigen Tiger 1 IR. Running fine yesterday. Today, fire the cannon, barrel recoil works and gun flash works. Tried to go forward right after firing gun, tank won't go forward or backward until about five to six seconds later. Tried it again, this time tank shuts down. Changed the battery, still continues to do the same thing. Unplugged flash connector and fired again. Barrel recoil normal but no gun flash or cannon fire noise as I expected, and tank goes forward immediately when right stick is applied. Unplugged all leads from the turret to the MFU and plugged in another Tiger 1 IR upper hull and turret. All works fine. I think the flash unit is the problem. Your opinions or thoughts please. Thanks