Chosen Solution

My Iron is plugged in and is still not powering on or heating up, could the cord be broken?

Have you tried a different plug? Or maybe the iron needs more water.

Open it up using this guide and then use a multimeter to test it: Shark Ultimate Professional Circuit Board Replacement

This Happens sometime, If you forgot to switch off your iron it get over heated and may melt the wire of circuits of the iron.  I have gone through it, Do check your Wires properly. Also check the power wire fwether it get burned out or not.  You may need to replace whole wire. In case you are planning to buy Get it here: - Best Steam Irons in market