Hyundai 6kW/7.5kVA Long Run Diesel Generator

HYUNDAI DHY8000SELR-T 6kW / 7.5kVA Multi-Phase Silent Long Run Standby Diesel Generator. Single phase / Three Phase. Starts runs and was outputting power until 2 weeks ago, and just stopped out putting. Engine runs no problem just no output. We "think" its an AVR Automatic Voltage Regulator. Dont have time to fix, we needed one, so bought new one.... Should be easily fixed.. this model is €1800+ new, its 4 year old, used etc.. sold as seen, can be started etc.. On a pallet, we can load into van etc Dont be ringing at all hours.. priced to sell