Coffee maker does not power on at all, no lights or display.

Safety first: Ensure the appliance is unplugged before any disassembly. Mains voltage is hazardous.

Basic checks:

• Verify the wall outlet works by testing with another appliance.
• Inspect the power cord for cuts, kinks, or burn marks.
• Check that the main power switch (if present) is in the ON position and feels mechanically normal.

Internal checks (advanced):

• Remove the rear or bottom cover to access the main PCB.
• Locate and test the internal fuse with a multimeter; replace only with the same type and rating if blown.
• Inspect the PCB for burnt components or cracked solder joints near the power input.

If the fuse blows again immediately or the PCB shows damage, the control board or power supply section likely needs professional repair or replacement.