Hi Danny, @RokuKariza-D @RokuDanny-R
I am helping my parents with their Roku Premiere (3920X) SN: K42077470863 and it was working fine for months and now goes into an endless loop of showing an Insufficient Power warning (no red light, but the unit is inoperable).
I have tried hard reset, changing the USB adapter, changing the cord, changing the outlet and nothing works. Given the number of other folks reporting the same issue, it seems like there is a larger issue here.
Not sure how to PM you, but I am only in town for a few days and would like to get a replacement unit shipped asap so I can help get it set up. Can you please let me know how this works?