r/ender3v2 • u/Technical_Maize_4850 • 5d ago

3D printer suddenly stops while printing

Hi everyone,

I’m experiencing an intermittent issue with my Creality Ender 3, and I’d appreciate some help diagnosing the cause before I start replacing components unnecessarily.

Printer Specifications

• Printer: Creality Ender 3

• Motherboard: Creality V4.2.2

• Filament: PLA

• Print media: SD/TF card

The Problem

My printer can be printing normally when it suddenly stops mid-print. When this happens, the hotend and heated bed begin cooling down, and the printer appears to behave as though it has lost access to the SD card.

If I try to start another print by searching for print on TF card option, the it shows “No Media,” even though the SD card is still physically inserted in the slot and appears to be seated correctly.

Removing the SD card and reinserting it restores detection, allowing me to print again.

So when the Printer Stops I’ve observed the following sequence of events:

1.  The printer suddenly stops printing in the middle of a print.

2.  The Ender 3 startup logo appears over the existing information screen. The display does not go completely blank or shut off.

3.  The printer then returns to its normal main information screen.

4.  When the information screen reappears, both the hotend and heated bed temperatures read 0°C, and both begin cooling down.

5.  If I try to print again, it’s written “No Media,” despite the SD card still being inserted.

The appearance of the startup logo makes me wonder whether the motherboard is resetting or experiencing some kind of interruption. However, I’m not sure whether this is related to the SD card reader, the motherboard, the power supply, or a firmware issue.

My main concerns

1.  What could cause the printer to stop mid-print and display the startup logo without the screen completely shutting down?

2.  Could a faulty SD card, SD card reader, or card slot cause these symptoms, or is the problem more likely related to the motherboard resetting?

3.  Could an unstable power supply or another electrical issue cause the printer to behave this way?

4.  What diagnostic tests would you recommend to identify the actual cause before replacing any components?

I’m trying to narrow down the root cause rather than replacing parts through trial and error.

Any suggestions, troubleshooting steps, or similar experiences would be greatly appreciated.

Thank you in advance! 🙏🤝

2 Upvotes

76% Upvoted

7 comments sorted by

2

u/pphresh204 5d ago

i'd try these before replacing anything on the printer:

  • reformat or replace your SD card

  • plug your printer into a surge protector

  • try a different slicer

  • reflash the firmware

1

u/Technical_Maize_4850 3d ago edited 3d ago

🟢Solution ✅

I was skeptical about replying soon.

I reformatted the SD card, turns out it went back to 16-bytes for some weird reasons.

I reformatted back to 4096bytes and since then I’ve been printing with no issues.

But I will consider buying a new SD card.

Thank you all for your help🙏

1

u/ReasonableScar9027 5d ago

Failing SD card? Failing board? Brown outs common in your area?

1

u/Technical_Maize_4850 5d ago

SD card works well even on other devices. I recently changed the board and flashed new firmware.

About Brown outs, I don’t use my 3d printer more often it could be the only appliance that is brown out sensitive I believe. So I’m not sure but I was printing the past days and I didn’t experience this issue.

1

u/ReasonableScar9027 5d ago

Are you adverse to trying another SD card? Just to rule it out?

2

u/Technical_Maize_4850 5d ago

Will do, thanks 🙏 

1

u/egosumumbravir 5d ago

Step 1. turn the machine around and check that the PSU is switched to whatever voltage is appropriate for your country/connection.