Hi Carl,
I would like you to try the below mentioned steps before coming to a conclusion:
Unplug the power cord, adapter from the printer, press and hold the power button on the printer for 20 seconds. This will remove the static power from the printer. Connect the Adapter and the cable back and try to power on the printer.
If the issue persists, please try a good adapter and power cable and check. If the problem persists the printer needs to be replaced.
Please reply for further help.