The GE Power Controls 141914 (also sold as MC‑70A) is a motor control board used in exercise treadmills to regulate the speed and direction of the running belt while also controlling the incline mechanism. Common failures include loss of belt motion with the incline still functioning, often due to burnt or failed MOSFETs, damaged driver ICs, or shorted output windings; other issues may arise from degraded capacitors or overheating of the power module. Begin troubleshooting by verifying 48 V DC input and ground continuity, inspecting for visible burn marks or component damage on the board, and checking motor current draw with a clamp meter while cycling the speed selector to confirm driver operation. If those checks are normal, review any diagnostic LEDs or error codes displayed on the treadmill’s console for clues to a specific fault.[oss-gpt-20b]