I have a AIMS POWER inverter (2500 watt, 24 volts) model # PWRINV250024W. It worked well for over a year then the ON/OFF switch began to malfunction for a couple days until the unit would could not be turned. On inspection I notice the small display/control board that holds the SWITCH, LED DISPLAY and MODE BUTTON had burnt parts. Can the display board be replaced or repaired?