My ICX 7150-C12P unit has to replaced again due to power loss in the home. My R150 units are not receiving power "PoE" from the main switch. This has happened to me once already and is very frustrating. I have power cycled both the routers and the ICX, as well as reset (little reset button, hold 10 seconds while powering on) the ICX multiple times. What are the new steps to getting the unit switched out? Thank in advance? Also what are recommendations to prevent this in the future