[m5extc]

Herman, it sounds like your alternator or internal regulator has gone. You want to take voltage readings at the battery and at the B+ or power post of the alternator. You may also want to run an amp test or an inductive lead on the power out wire of the alternator. I have not had to rebuild a Powermaster before but many internally regulated alternators have replaceable brushes and regulators. Let me know what you find and if you need any help.

Andrei