i need some help
i m using the sound mixer which name is "ON AIR STUDDER 2000M2" in this the problem which i m facing is that it lost all the memory which i assigned to input of channels on the manual it is written that it happen due weak battery and instruct to replace the battery when i want to locate the battery in the board then i could not find it i want to know that where the battery is installed in it i will be very thankful to you