DTXplorer replacing battery.mov

How to replace a battery in a Yamaha DTXplorer Drum Machine. No need to send to an authorised Yamaha dealer. Fairly easy DIY job using a CR2032 battery that costs about £3 or £4. Takes about 15-20 minutes. Need a small cable tie to replace one you will cut (this avoids removing spade connectors from a switch as this can snap easily - my suggestion is safer!)