Quoted from embryonjohn:The gun trigger switch stopped doing anything but now the left flipper button launches the ball!? Is this some type of backup to keep the game playable if the switch inside the gun fails?
Just noticed the DMD is now getting a little sketchy. Related?
Most games have a backup in case the trigger switch (or similar) fails. Do a switch test as suggested, and then check your settings to see if the gun trigger is disabled.