Answer
May 29, 2024 - 02:46 PM
Testing your iMac power supply involves checking for power issues like unexpected shutdowns, the device not turning on, or the system not responding. You'll need to disconnect all external peripherals, try a different power cord or outlet, and reset the System Management Controller (SMC). This information was sourced from the Apple support page on "If your iMac won't turn on" (https://support.apple.com/en-us/HT204267), specifically under the sections "Check your power connection", "Check for display issues", and "If your Mac still won't start up".
