Fanuc A20B-0008-0010 Power Supply Unit Board. Fits on the main Power Supply Unit for Fanuc Series 3, 3M, 3T control System Series. The power supply boards are not available independently from the power supplies that they are part off. In this case DNC offer ONLY a replacement power supply for the A14B-0067-B001 namely the DNC B001/T. DNC do offer fault diagnosis and testing upon this Power Supply Unit, but do not offer exchange or repair services – opting to supply our own DNC B001 with 2 year warranty.