Solder works great - can't tell you exactly what kind, cos it was supplied lableless at work

But repaired many a terminal with a bit of solder - can work on some heated front screen terminals too (even the plastic coated foil strip tyes, if your careful )

Tried plenty of conductive glue and they're all shit. Even if you can get one to work, it either stops conducting after a short while, or stops sticking and it falls off again