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Changes to Ubiquiti UniFi AP AC Lite TVS Diode Replacement Introduction

Edit by Yang Zhao

Edit approved by Yang Zhao

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Device
[ ]Ubiquiti UniFi AP AC Lite
Type
[ ]replacement
Thing
[ ]TVS Diode
Title
[ ]Ubiquiti UniFi AP AC Lite TVS Diode Replacement
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
Time Required Min
No estimate
Time Required Max
No estimate
Imageid
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Difficulty
Moderate
Conclusion
[ ]To reassemble your device, follow these instructions in reverse order.
Author
Public
No
Summary
[ ]Repair an Ubiquiti UniFi AP AC Lite which is exhibiting a power fault problem: AP does not power on, and PoE Injector is blinking white.

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  • Member-Contributed Guide added.

Steps

Step #: 1
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