PurpleAir classic won't power up from exterior outlet

I have PurpleAir classic sensor that has been working well for several years. I disconnected the power the other day and when I reconnected it, the sensor didn’t work. After checking everything, I found the outdoor power adapter had died.

I replaced the power adapter and it works fine on an interior outlet. However, it no longer works on an exterior outlet.

I confirmed power at the exterior outlet, confirmed the sensor worked on multiple interior outlets (including GFI) and did not work on multiple exterior outlets. Other devices work on the exterior outlet.

I’m at a loss - any thoughts?