To follow-up with my above (and other) post(s), I received the replacement 620HX a short while ago.Just to follow-up on my above post, Corsair did contact me promptly after I notified them of the problem & they issued an RMA right away for my dead 620HX.
I'll be shipping it out today (unfortunately they are in CA and I'm shipping from PA ) & I will post back how quickly I receive another unit.
WOW - now that's ironic to say the least.The company that made those videos was Corsair....
While I can't completely disregard your comment that something else may have killed the 2nd psu, I will say that the exact same PC worked great for 3 weeks or so with a lower-wattage psu (550 watt) that's not as efficient as the Corsair.Before pointing at the PSU as being the culprit (not saying it isn't) the chances of 2 bad PSUs in a row are pretty slim, espcially being that one was DoA and next exploded.
A PSU actually going bang is normally due to being overloaded, so you might want to check out all your components to make sure one of them didn't lead to your issue.