The DJI O4 Pro Air Unit has been making waves in the drone community, but a troubling issue has surfaced regarding the UFL connections. Ian from MadsRC has recognized a growing concern: the antenna UFL connections are prone to detaching, often due to minor crashes or even rough handling. This blog post delves into the causes, implications, and potential solutions for this issue, ensuring that drone enthusiasts are well-informed and equipped to handle the situation.
The Growing Concern
Reports of UFL connections being ripped off have become increasingly common since the release of the O4 Pro. Ian highlights that users have reached out to him with their experiences, and many have shared their frustrations online. The right-hand UFL connection appears to be the most susceptible, but the left-hand one is not immune either. Whether it’s a light tug or a mild crash, these connections seem to come off with alarming ease.
Understanding the Cause
Upon closer inspection of the UFL connection, it's evident that the manufacturing process is a contributing factor. The solder is applied in paste form, and the UFL is placed on top. When heated, the component floats into place, but this means that the UFL connection is not encapsulated in solder. As a result, the lead-free solder used is quite soft and offers minimal mechanical strength.
While Ian doesn’t classify this as a design flaw, he asserts that it is definitely a weak point. He points out that DJI could improve the manufacturing process to enhance the strength of these connections, such as using more solder or even gluing the UFLs into place.
Reinforcing the UFL Connections
To combat this issue, Ian walks viewers through a modification process aimed at reinforcing the UFL connections. This involves rewetting the connectors and adding more solder to ensure greater mechanical strength. However, he cautions that this isn’t a task for everyone; it requires a certain level of skill with soldering.

Using a specialized soldering iron designed for small component repairs, Ian demonstrates how to carefully apply heat and solder to the UFL connections. His method is to ensure that the pads on either side of the UFL are encapsulated, thus providing additional strength. He emphasizes the importance of being cautious, as the UFL connections are made of a plastic-like material that can easily melt if overheated.
What If You’ve Already Damaged Your UFL?
If you find yourself in a situation where your UFL has already detached, Ian provides reassurance that repairs are possible, albeit challenging. He notes that most damage typically leaves the ground pads intact, meaning that with careful work, you can scrape back and reconnect the signal wire.
DJI's Responsibility
Ian expresses his disappointment that such a significant issue exists with the O4 Pro Air Unit. He believes that DJI needs to step up and improve the manufacturing quality to prevent future users from facing this problem. While firmware updates can address many issues, this particular concern is related to hardware reliability, and it’s one that requires a proactive solution from the manufacturer.
Conclusion
In conclusion, while the DJI O4 Pro Air Unit offers impressive features and performance, the UFL connection issue is a notable concern that cannot be overlooked. By understanding the root cause and employing the reinforcement techniques outlined by Ian from MadsRC, users can mitigate the risk of damage. Moreover, it’s essential for DJI to take this feedback into account and enhance their manufacturing processes to ensure a more robust product for all users.
FAQs
- What is a UFL connection?
A UFL connection is a type of micro coaxial connector commonly used in RF (radio frequency) applications, including drone antennas. - Can I fix a detached UFL connection myself?
Yes, but it requires soldering skills. If you're not confident, it's best to seek professional help. - Will modifying my air unit void the warranty?
Yes, any modifications can affect the warranty, so proceed with caution. - What should I do if my UFL connection detaches?
If it detaches, try to repair it by re-soldering or reach out to DJI for a warranty replacement.
This article was based from the video DJI O4 Pro Airunit Has UFL Issues - How To Protect Your Self!