You may have brushes worn out in your alternator? Not so expensive fault. If you are d.i.y. there is an easy way to try to test (if you´re not d.i.y.- person, just skip following): Knock the alternator side with wooden stick and little hammer. The brushes may move a little and get contact again for a while.I did that to my T27 and was able to drive at least 50 km with working alternator. I replaced brushes myself later. Other possibility: charge Battery and drive to workshop. They have