..I have a Blink, and I hope it keeps on chugging, but I have an Open EVSE board already so when it dies, I'm ready
That is one option.
But the old Blink units have multiple risks.
My SD card corrupted several months back, and currently is working as a dumb EVSE.
But other thread indicates 43% eventually have main board failure which the OP probably has.
They also have bad REVA cable crimp concerns, and inadequate power connection concerns.
For me if mine dies either evseupgrade or an Open EVSE new build by GlennD is probably a better choice.