Miller XMT 350/425 Auxiliary Power Control Board

Get Your XMT Running Again with the Miller 246070 Control Board

Down equipment means lost revenue, and when your Miller XMT 350 or XMT 425 goes down due to an auxiliary power failure, you need a reliable fix fast. The Miller 246070 Circuit Card Assembly is the genuine OEM replacement board responsible for controlling the auxiliary power output on your welder. If your machine welds fine but refuses to power your water cooler, grinder, or work lights plugged into the receptacles, this control board is likely the culprit. Swapping out a faulty board with this authentic Miller part is the surest way to get your setup back to 100% operational status.

The XMT series is the workhorse of the welding industry, but even the toughest machines need maintenance. The auxiliary power circuit is vital for shops that rely on water-cooled torches; without functional aux power, you risk burning up expensive torches or overheating your machine. This kit includes the specific circuit card assembly engineered to communicate correctly with the XMT's main power module, regulating the voltage supplied to the auxiliary outlets. Because it is a genuine Miller part, you don't have to worry about fitment issues or software incompatibilities that can plague generic electronic repairs.

Technician Note: Please be aware that this is a non-returnable electronic item. We strongly advise troubleshooting your machine thoroughly before ordering. Confirm that the issue is indeed the control board and not a fuse, wiring harness, or receptacle issue. Due to the complexity of inverter power sources, installation should be performed by a qualified technician using proper ESD (Electrostatic Discharge) grounding procedures. Static shock can destroy a new board instantly. Verify your machine's serial number against the compatibility list or call for technical verification to ensure this is the exact board for your specific generation of XMT 350 or 425.

Don't let a fried circuit board stop your production line. The Miller 246070 is the direct replacement you need to restore the auxiliary power functions that make the XMT series such a versatile tool in your arsenal. Order today to minimize downtime and keep your arcs lit.