Miller 246069 Control Board Kit for XMT 350/425

Miller 246069 Circuit Card Assembly Control Kit for XMT 350/425

The Miller 246069 is a Circuit Card Assembly (Control) Kit designed exclusively for the maintenance and repair of Miller XMT 350 and XMT 425 multiprocess welders. As the central processing unit for the power source, this control board manages the inverter's output, user interface inputs, and safety monitoring systems. A failing control board can lead to downtime and lost production, making this replacement kit a vital component for industrial maintenance and repair operations (MRO).

Supersedes Part Number 242812

This item replaces the discontinued Miller part number 242812. If you are servicing an older XMT unit that lists 242812 as the required control board, the 246069 is the manufacturer-specified upgrade. It is engineered to fit physically and electrically into the control assembly of the specified XMT models without modification.

Important: Non-Returnable Electronic Part

Please be aware that this is a sensitive electronic component. There are no returns on this product. Once the package is opened or the board is installed, it cannot be returned for credit. If you are not a Certified Miller Technician, we strongly advise having the machine diagnosed by a professional before ordering to ensure the control board is indeed the root cause of the failure. Installing a new board into a machine with other underlying faults (such as a shorted IGBT or input rectifier) can instantly damage the new board.

Fitment Verification

To guarantee compatibility, you must verify the fitment using your welder's serial number. Miller equipment often undergoes internal changes during production runs. We recommend calling Miller Technical Support at (800) 558-3517 with your serial number ready to confirm that part number 246069 is the correct control assembly for your specific unit. This step is crucial to avoid purchasing a non-returnable part that may not fit your machine generation.