Dryer will not start at all; no drum movement when Start is pressed, though lights may be on.

Safety first: Disconnect power before testing components.

Steps:

• Confirm door closure: Ensure the door is fully closed and the latch engages. Listen for a click from the door switch.
• Test door switch: Access the door switch and check continuity when the door is closed. Replace if faulty.
• Check thermal fuse: Test the thermal fuse on the exhaust duct; replace if open.
• Start button and control: If equipped with a physical start switch, test it for continuity when pressed. If all switches and fuses are good, the motor relay or control board may be defective.