Introduction |
This guide outlines steps needed to repair an Ubiquiti Unifi AP AC Lite (model UAP-AC-LITE) access point which '''does not power on''', and is identified by the PoE injector has having a power fault. (Blinking white on the PoE injector.) | | The UAP-AC-LITE contains an over-voltage protection circuit driven by a unidirectional TVS diode. While this diode is not a fuse, it's expected failure mode is to short, and diverts all power away from the rest of the hardware. This also is detected by the PoE injector, which shuts off power entirely. | | In this guide will show how to: | | # Disassemble the UAP-AC-LITE | # Test if the over voltage protection TVS diode has failed | # Remove and replace the broken diode |
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