DJI Mini 3 Rear Arm Replacement
Ahmad Abutineh and 4 other contributors
Last updated on Aug 31, 2026
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Introduction
Go to step 1 ↓The DJI Mini 3 is a lightweight, highly capable drone, but like any compact quadcopter, its arms are vulnerable to damage from crashes or wear over time. A cracked or loose arm can cause unstable flight or prevent the drone from taking off altogether. Fortunately, replacing a damaged arm is a straightforward repair that does not require replacing the entire aircraft.
This Fast Fix guide will walk you step-by-step through removing a damaged rear arm and installing a new one. The process involves opening the drone’s shell, disconnecting the arm’s wiring, and securely mounting the replacement component. With patience and a little finesse, you can get your Mini 3 back in the air in around an hour.
What you need
Tools
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Follow the wires of the broken arm to the electronic speed controller as shown. There should be a red, white, and black wire. Desolder these wires from the pad and remove the wires from the drone body.
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Gently pull the wires free from the drone arm and remove the motor. Route the wires through the new arm to complete the replacement of the broken arm.
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Ask FixBot
To reassemble your device, follow the above steps in reverse order.
Take your e-waste to an R2 or e-Stewards certified recycler.
Didn’t go as planned? Try some basic troubleshooting or ask our Answers community for help.
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Team
University of Memphis, Team 51-1, Sneed Fall 2025 Member of University of Memphis, Team 51-1, Sneed Fall 2025
UM-SNEED-F25S51G1
1 Member
12 Guides authored
1 Guide Comment
Terrible guide. The first step doesn't mention the first two screws you need to remove.
If you do as the guide says, on step 1, you damage the shell forever.
The rest of the steps don't make sense either, this is useless.
Author should be banned.
