The last TVM▸ to be installed at a remote station (Clifton Down in this case) didn't last long.
There was a trial at Redland Station a few years back using an adapted street parking ticket machine which would just issue tickets valid on the Beach Line. It proved unreliable and was put out of use then later removed.
I think there still is a more modern ticket machine working at Clifton Down but only on one of the platfoms.