hi i have a victron easysolar 24/3000/70 the mppt stopped after 2 days it went off for repair there were some holes in chassis when delivered new came back from repair with these holes worked out i have only got 1 screw holding the mppt and wiring on chassis also the fan is not working thus it keeps cutting out i can hear a humming noise noise from top of inverter but no fan working brought from low energy supermarket via amazon phillip gordon from victron sorted my return out first time PLEASE HELP