I have a su-kam fusion series 3.5kVA 48volts inverter. It got its mains input spoilt by lightning(i did not have a surge protector on the mains side as i have been on solar for years before now). The inverter constantly beeps like there is mains when there is none and hence does not invert power unless the input MCB breaker is switched off. It can not presently charge from mains supply but the inverter function is working fine(using solar to charge the battery).
I need an estimate on the charger’s repair