Resetting the unit
If you observe any of the following symptoms.
The unit is plugged in, but the power will not turn on or off.
The front panel display is not working.
The unit is not operating normally.
You can reset the unit as follows.
Press and hold the POWER button for at least five seconds. This will
force the unit to power off then turn the unit back on.
Unplug the power cord, wait at least five seconds, and then plug it in