Parts for Maytag JMC2127WS00: 01 - Oven Parts

This power supply board, sometimes referenced as the SMS module, provides regulated low-voltage power for the appliance's control system. Replacing a failing board restores power to the controls so the unit turns on and runs reliably.

• Converts AC line power into stable low-voltage DC for control electronics and the user interface
• Distributes power to critical control circuits and relays
• Helps protect sensitive components from voltage irregularities
• Common symptoms: no lights or display, unresponsive controls, won't start, intermittent power loss

• Disconnect power at the breaker and verify no voltage is present before servicing
• Handle the board by the edges and use ESD protection
• Photograph/label connectors; transfer wiring one at a time to avoid misrouting
• Ensure all connectors are fully seated and the board is secured before restoring power and testing