Nitecore EA41 Problem

My EA41 just stopped working. It blipped once when I turned it on, then nothing. I swapped for a second set of cells, same thing. The blue LED status light blinks properly, but no main LED. Any suggestions as to what to try next?
I can’t find my paperwork, and I checked all my usual order sites and can’t find an original order. Nitecore store is supposed to be looking up seller from the serial number, and I hope to hear from them next week.

Did you ever figure out what the problem was/is?

Thanks.

Send an email to service@nitecore.com … that’s their service center in China…they will give you a walk-through the simple steps…like getting their address, etc.

Copy that… Thanks