I've seen a few posts on Twitter and my dad just told me it happened to him in 2018.
Poll workers have been known to tell suspected republican voters that the ballot machine is not working at the moment and they'll send it through for you once it's back up. If this happens, tell them you will wait until it's back up. My dad and a few other voters did this and the machine miraculously started functioning again.
These cheating commies will exploit every possible opportunity to steal the vote.
Im working as an election judge on 11/3. I will be watching that machine like a hawk