<p>I was having the same issues with the Mega S. After checking all the connections and switches, I saved all the files that were on the SD card to my laptop. I then performed a standard format (not a Quick format) on the SD card. After that was accomplished, I put the files back on; success, the printer works fine. Apparently the random writes on the SD card and not knowing where the G-code or STL was dropped can make the printer confused seeing a G-code file that has to be read continuously step by step.</p>

CC BY-SA 4.0
2022-11-13T23:13:18.720Z
2022-11-13T23:46:46.780Z
2022-11-13T23:46:46.780Z
Everett T
<p>I have an Anycubic i3 Mega S and I'm using Ultimaker Cura. I'm using it for 1-2 years but 1-2 months ago this issue has started: The printer is starting to print then usually after 2-3 loops, it just stops working. I can't stop &amp; pause the printing (it gives an error) and I have to turn off the printer.</p>
<p>I reinstalled the firmware multiple times with both Ultimaker and SuperSlicer but it is still happening. I have tried to use different slicer software, models (STL files), SD cards, and none of them worked.</p>
<p>Also recently I noticed something weird: this problem happens when the model is bigger than 5-8 cm. Like it happened when I tried to print a 10x10 cm model but I split the model into two parts and it worked fine. Also, it's about the area of the model's bottom. For example, if the model has a skirt bigger than 5-8 cm, it causes this issue but when I remove the skirt then it works fine.</p>
<p>BTW, I checked the G-code and didn't notice anything unusual and even with different slicer software, the exact spot where the printer stopped doesn't change.</p>
<p>I don't think the STL file is causing this because, for example, if I want to print a 5x8x3 cm model, I can't place it horizontally (5x8 area at the bottom) but I can place it vertically (5x3 area at the bottom) and it works fine.</p>
<p>Settings:</p>
<ul>
<li>Print speed: 50 mm/s</li>
<li>Travel speed: 100 mm/s</li>
<li>Nozzle temperature: 200 °C</li>
<li>Bed temperature: 60 °C</li>
<li>PLA filament</li>
<li>Retraction distance: 6 mm</li>
<li>Retraction Speed: 40 mm/s</li>
</ul>
<p>I'm using a Volcano V6 hotend</p>
<p>I'm using stock 1.1.5 firmware:</p>
<p><a href="https://drive.google.com/file/d/176Zdtz8-ZvCqL7MgupIVYgKVEnWnkPmW/view" rel="nofollow noreferrer">https://drive.google.com/file/d/176Zdtz8-ZvCqL7MgupIVYgKVEnWnkPmW/view</a></p>

CC BY-SA 4.0
2022-01-30T11:50:11.677Z
Have you checked the bed dimensions in your slicer? The presets may have changed for some reason, which might be causing you issues.
Pᴀᴜʟsᴛᴇʀ2
CC BY-SA 4.0
2022-01-30T14:34:54.717Z
Yeah I was using same settings I used before in Cura  and When I was testing in different slicers, I certainly know  it's the right dimensions I entered (210x210x250 mm)
Mordecai
<firmware><anycubic-i3-mega><repair>
My Anycubic i3 Mega S stops working
Mordecai
# My Anycubic i3 Mega S stops working

(Asked by: username_0 on 2022-01-29)

I have an Anycubic i3 Mega S and I'm using Ultimaker Cura. I'm using it for 1-2 years but 1-2 months ago this issue has started: The printer is starting to print then usually after 2-3 loops, it just stops working. I can't stop & pause the printing (it gives an error) and I have to turn off the printer.

I reinstalled the firmware multiple times with both Ultimaker and SuperSlicer but it is still happening. I have tried to use different slicer software, models (STL files), SD cards, and none of them worked.

Also recently I noticed something weird: this problem happens when the model is bigger than 5-8 cm. Like it happened when I tried to print a 10x10 cm model but I split the model into two parts and it worked fine. Also, it's about the area of the model's bottom. For example, if the model has a skirt bigger than 5-8 cm, it causes this issue but when I remove the skirt then it works fine.

BTW, I checked the G-code and didn't notice anything unusual and even with different slicer software, the exact spot where the printer stopped doesn't change.

I don't think the STL file is causing this because, for example, if I want to print a 5x8x3 cm model, I can't place it horizontally (5x8 area at the bottom) but I can place it vertically (5x3 area at the bottom) and it works fine.

Settings:

* Print speed: 50 mm/s
* Travel speed: 100 mm/s
* Nozzle temperature: 200 °C
* Bed temperature: 60 °C
* PLA filament
* Retraction distance: 6 mm
* Retraction Speed: 40 mm/s

I'm using a Volcano V6 hotend

I'm using stock 1.1.5 firmware:

<https://drive.google.com/file/d/176Zdtz8-ZvCqL7MgupIVYgKVEnWnkPmW/view>

**Tags:** firmware, anycubic-i3-mega, repair
> **Comments:**
> **username_1**: Have you checked the bed dimensions in your slicer? The presets may have changed for some reason, which might be causing you issues.  
> **username_0**: Yeah I was using same settings I used before in Cura  and When I was testing in different slicers, I certainly know  it's the right dimensions I entered (210x210x250 mm)  

---

## 1 answers

### Answer by username_2 on 2022-11-13. Score: 1

I was having the same issues with the Mega S. After checking all the connections and switches, I saved all the files that were on the SD card to my laptop. I then performed a standard format (not a Quick format) on the SD card. After that was accomplished, I put the files back on; success, the printer works fine. Apparently the random writes on the SD card and not knowing where the G-code or STL was dropped can make the printer confused seeing a G-code file that has to be read continuously step by step.


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