Re: another charging problem, but different i think.
I assume you checked the AC circuit breaker on the charger? . . . and the 2 solder fuses were checked with a DVM for continuity?
There are several things that cause your problem, including: (from charger manual)
1. Batteries disconnected (which I assume everything is hooked up)
2. Battery voltage too low (which is not situation . . your batteries are over 36v)
3. Poor connection between DC plug/receptacle (spray a little WD40 there)
4. Onboard computer malfunction.
5. DC plug and cord (you say you tested it)
6. Gray sense lead fuse blown (you said it is ok)
7. Receptacle's fuse link blown (you said it is ok)
8. Wire connections loose/corroded
Best to try a known functional charger on your cart to remove either your cart or your charger out of the equation.
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