I have found that if you turn it off and on by the buttons then it will stop working in continous sweep mode and will only work in single sweep no matter what combination of button pushing you use, exiting the game and reloading gets it back. Using TM late 43 in a Balao.
Very frustrating as air contacts are only called when spotted by lookouts so a hasty turn and crashdive which usually results in damaged deck gun which damages the gunner if you go to battle stations. crazy stuff.. and lesson learned is don't fiddle with the buttons
