Our Easyplus began failing last night. The unit was new in December 2017. Situation: boat live aboard in a 240vac mains marina, Australia. When household devices are connected to AC OUT #3 we hear a crackling sound & power to the devices fluctuates (house vacuum) & device stopped. Inverter is not used, so not an inverter problem. The other AC OUT circuits in-use work normally. We have had no problems running our devices up to this point. Devices we use: 240v house vacuum, kitchen kettle, single electric induction hotplate, battery chargers for power tools, laptop charger & that's about it. Thanks in advance for any help.