This turned out to be a bad power supply.
The power supply I had was only reading 1.4v output when it should have been 19v.
To test, I found that I had an extra Dell Laptop power supply that outputs at 19.5v and 4.62 amps. Close enough to the 4.74 amps at 19 volts required by the DX4000 and I figured the DX4000 should have enough tolerance for an additional 500 millivolts. The extra 500 millivolts makes up for the lack of amps: 19 volts X 4.74 amps = 90.06 watts and 19.5 volts X 4.62 amps = 90.09 watts. I tested all this with a multimeter the proper way and made sure I connected the polarity the correct way.
I spliced the power connecter for the DX4000 onto the dell laptop power supply and my DX4000 has completely booted up and is currently verifying its storage.
I'll continue to monitor but it booted up just fine after plugging it in, after not being plugged in since I made the OP. Back ups start now just to be safe.
So for future reference: a dell laptop power supply can be used to power one of these if spliced onto the proper connector.