[Vwdiesel] Alternator question

[MWoodland at Dentsply.com]

I noticed the lights flickering on my Jetta ('91 NA) last night, and tested
the voltage at 13+ volts DC charging, and almost 30 volts AC.

My first guess would be that I lost a diode in the bridge rectifier, which
is probably inside the alternator, and not part of the voltage regulator..

Haven't yanked it apart yet.
Does this sound right?
Any BTDTs?

Best regards,
Mark

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