Fanuc A06B-6091-H HV Alpha Power Supply Module - Serial. DNC offer comprehensive services for the 6091 Series of AC alpha PSM HV modules for the 400V Alpha series including alpha HV power module exchange, repair, used surplus spares (stock permitting), fault diagnosis and testing facilities. 180 day warranty exists on repairs and supplied exchange parts, also transistor modules, clear-up and board fuses are available. For the A06B-6091 Alpha High Voltage Power Supply Modules that are not in stock, or drives that not required urgently, DNC offer a 24 hour repair turnaround service as standard on A06B-6091- though if Alpha HV power drives are urgent then same day is possible with enough advanced notice.