I have a smartpro5k that is operational,operates on 208vac and battery (54vdc) however the brain has no status lights on front panel, no usb connectivity on the rear, and the fans are not spinning. This suggests to me that there is a low voltage power supply or tap in the Ups, that has opened or failed. Documentation is scarce, but i was able to glean that the fans are 24vdc. Will begin to trace the existing circuit tomorrow. Does any one have a wiring diagram, schematic or block diagram that they can share? We are a k12 school and simply cant afford $3-5k for a replacement.
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