DIAGNOSIS This is almost always a power supply issue, not a broken machine. Either the outlet isn't working, the cord isn't fully connected, or the unit's internal power switch is in the wrong position.
FIX Let's troubleshoot step-by-step. 1) Check your wall outlet. Plug in a lamp or phone charger to confirm it has power. 2) Trace the power cord from the ice maker to the wall. Ensure the plug is fully inserted at both ends—firmly into the outlet and securely into the port on the back of the ice maker. 3) Look on the back or bottom of the unit for a physical rocker switch (often near the power cord input). It might say '0' and 'I'. Make sure it's flipped to the 'I' or 'ON' position. 4) Now try the front panel power button.
IF THAT DIDN'T WORK Try a different, known-good outlet on a different circuit. Kitchen outlets can be on GFCI circuits that have tripped. If it works in another outlet, go reset the GFCI button on your kitchen outlet (that little test/reset button in the center).
HEADS UP These units don't have a battery backup or memory. If you unplug it or flip the rear switch off, you'll lose any timer settings, but it won't harm the machine. It's designed to be unplugged for cleaning and storage.