Find the right power-check steps for Commander, POS, UPS, and Pinpad.
Start with the device that has the issue.
Then follow the matching power-check guide below.
Also called: device has no power, device is off, black screen, blank screen, power check
Keywords: how to check for power, power troubleshooting, device power check, POS no power, Commander no power, UPS no power, Pinpad no power, black screen troubleshooting
Check both ends of every power cable.
If a device uses a power brick, check the brick too.
Do not unplug Ruby 2 or Topaz power from the back of the unit.
Ruby 2 and RubyCI have separate power.
If a UPS has no output, verify wall power and press reset.
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