Contact your reseller and request a warranty replacement. Include a link to this thread as authorization.
Bear in mind that it's possible a wiring fault caused a short between VIN and 5v/3.3v and if that fault is still present it could also take the replacement board out. This can typically happen at the hotend where a heater wire comes in contact with a fan or thermistor wire, sometimes via the hotend metal work. It's also possible a regulator has failed prematurely on the board itself, hence the warranty replacement.