<p>From your description I assume that the ESC in the stack blew up, not necessary the FC. This makes most sense as that is the part where the biggest currents are flowing.</p>
<p>Check if the electrolytic capacitor on the battery connection of the ESC still is properly connected as that absorbs the voltage spikes your motors generate during flying. If that capacitor is loose or located too far away, the voltage spikes can destroy the FETs on your ESC and you will burn up the ESC and the motor connected to that ESC.</p>

CC BY-SA 4.0
2020-09-11T08:03:50.323Z
2020-09-11T08:03:50.323Z
Flyback FPV
<p>Sadly I dont have an answer but I had just finished setting up my brand new ESC and it exploded right infront of me and thankfully nobody was hurt but that was scary. It also happened to be a Mamba F405 MK2 so im starting to think its happened in alot of them</p>

CC BY-SA 4.0
2022-12-31T02:58:58.440Z
This does not provide an answer to the question. Once you have sufficient [reputation](https://drones.stackexchange.com/help/whats-reputation) you will be able to [comment on any post](https://drones.stackexchange.com/help/privileges/comment); instead, [provide answers that don't require clarification from the asker](https://meta.stackexchange.com/questions/214173/why-do-i-need-50-reputation-to-comment-what-can-i-do-instead). - [From Review](/review/late-answers/1248)
sempaiscuba
CC BY-SA 4.0
2022-12-31T02:41:15.847Z
2022-12-31T02:41:15.847Z
Watermelon Head Gaming
<p>I was casually flying my drone and my ESC board in my stack let out the magic smoke, and then fell from the sky randomly. I hadn't changed any tuning settings, and the stack was only ~3 weeks old. I am using a Mamba F405 MK2 stack, and the Flashhobby Samguk WU 2206 2700Kv motors. As far as i am aware, the Flight controller portion of the stack still works, but the ESC board is dead. The tune was essentially stock, except for modified serial port configuration.</p>
<p><strong>What could have caused it to explode, and what should I do?</strong></p>

CC BY-SA 4.0
2020-09-10T19:57:39.890Z
I'm a little confused.  You say that your "*flight controller let out the magic smoke*", and then later that "*the FC still works*".  Do you mean that your ESC burned-out in-flight?
sempaiscuba
CC BY-SA 4.0
2020-09-10T19:59:07.030Z
Also, please tell us more (by [edit]ing your post) about how you had everything connected and maybe include some pictures. As you have it, we don't really have much information to go on.
ifconfig
<betaflight><racing>
My ESC in my stack just randomly exploded, any ideas why?
Ari Stehney
# My ESC in my stack just randomly exploded, any ideas why?

(Asked by: username_0 on 2020-09-10)

I was casually flying my drone and my ESC board in my stack let out the magic smoke, and then fell from the sky randomly. I hadn't changed any tuning settings, and the stack was only ~3 weeks old. I am using a Mamba F405 MK2 stack, and the Flashhobby Samguk WU 2206 2700Kv motors. As far as i am aware, the Flight controller portion of the stack still works, but the ESC board is dead. The tune was essentially stock, except for modified serial port configuration.

**What could have caused it to explode, and what should I do?**

**Tags:** betaflight, racing
> **Comments:**
> **username_1**: I'm a little confused.  You say that your "*flight controller let out the magic smoke*", and then later that "*the FC still works*".  Do you mean that your ESC burned-out in-flight?  
> **username_2**: Also, please tell us more (by [edit]ing your post) about how you had everything connected and maybe include some pictures. As you have it, we don't really have much information to go on.  

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## 2 answers

### Answer by username_3 on 2020-09-11. Score: 2

From your description I assume that the ESC in the stack blew up, not necessary the FC. This makes most sense as that is the part where the biggest currents are flowing.

Check if the electrolytic capacitor on the battery connection of the ESC still is properly connected as that absorbs the voltage spikes your motors generate during flying. If that capacitor is loose or located too far away, the voltage spikes can destroy the FETs on your ESC and you will burn up the ESC and the motor connected to that ESC.


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### Answer by username_4 on 2022-12-31. Score: 1

Sadly I dont have an answer but I had just finished setting up my brand new ESC and it exploded right infront of me and thankfully nobody was hurt but that was scary. It also happened to be a Mamba F405 MK2 so im starting to think its happened in alot of them

> **Comments:**
> **username_1**: This does not provide an answer to the question. Once you have sufficient [reputation](https://drones.stackexchange.com/help/whats-reputation) you will be able to [comment on any post](https://drones.stackexchange.com/help/privileges/comment); instead, [provide answers that don't require clarification from the asker](https://meta.stackexchange.com/questions/214173/why-do-i-need-50-reputation-to-comment-what-can-i-do-instead). - [From Review](/review/late-answers/1248)  

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