Alternator "tridiode?"

[Yarisduder]

So there is no diode trio... so that can't be the problem?

I'm going to try cleaning the external contacts first.

[Sir A.Y. Atoyot]

Originally Posted by Yarisduder

So there is no diode trio... so that can't be the problem?

I'm going to try cleaning the external contacts first.

Good plan. Make sure that there's plenty of travel left on the brushes. Have a good look at the stator windings and make sure there is no burnt or discolored appearance. If you can, check the diodes with an ohmmeter.