Hello jbeale, and welcome back to the community.
I’m sorry to hear about this issue, so let’s see what we can do.
I think the recent power failures you described may have affected some files on the microSD card, causing the problem you are seeing. Could I please ask you, as you can access rs.local/, to download the Shake logs and post them here?
They should provide more insight into what is happening so I can advise you better. If needed, instructions on how to get them are here: Please read before posting!
Thank you!