You've spent more time avoiding posting useful information than it would have taken to provide. If you had provided them, and no issue would have been found, you would very likely have had your warranty approval by now.
Plenty of warranty claims aren't warranty, they're wiring or other issues that can be found by helpful do-gooders like myself and others. Many hands make light work, That's kind of what the point of these forums and open-source in general.
Hindsight being 20/20, it's a quick and cheap insurance to check continuity between ground pins on two interconnected things to rule out those issues before turning the power on. (It's not perfect, but, surprisingly effective for little effort)