(ET) Weird charger failure

[Christopher Zach <cz alembic crystel com>]

So the old charger on my E15 (wreck-trak) stopped working this summer, 
and this fall I figured I would check it.

Symptom was no charging, 110 on primary, transformer was very hot after 
being on all night.

Power to 36 volt molex line into charger: Check and ok.
Voltage across diodes: .6 volts, check
Voltage across secondary BOOM shorted a diode by mistake.
Raw AC from secondary: 8-10 volts or so. Odd.

So on a lark (and since I blew a diode) I replaced both diodes, cleaned 
up the connectors, and tried it this evening.

Fail. No charging at all.

Did I actually have the transformer fail? What kind of voltage AC should 
I see between the transformer secondary poles and what DC should I see 
on output with the charger disconnected from the pack?

Drat.
C