Buzzing or Zapping Sound During Using M30U
Published at: 2026-05-22
EMS sound, skin contact, and mode behavior check
Potential Causes
- A faint EMS sound may occur in LIFT, EYE, or SL mode.
- Electrode head is not in full contact with the skin.
- Skin is too dry.
- Not enough gel was applied.
- STAMP mode should not produce EMS current sound.
Troubleshooting Steps
- Check the mode
A faint current sound may occur in LIFT, EYE, or SL mode.
STAMP mode does not use EMS microcurrent. - Apply enough gel
Gel helps improve contact and comfort during microcurrent treatment. - Keep the device fully in contact with skin
Poor contact may make the sound more noticeable. - Check whether the sound is abnormal
Stop using the device if you hear loud zapping, sparking, or crackling sounds.
Details
A faint sound during EMS use can be normal. However, if there is a loud zapping sound, spark, burning smell, or visible damage, stop using the device immediately.
Please prepare your order number, purchase platform, a short video showing the sound/issue, and your device SN code / Serial Number, then fill out the form.
Where to find the SN code:
For the JMOON by Ulike NouvelleSkin M30U, the SN code is located at the bottom of the device, below the charging port.
For the JMOON by Ulike NouvelleSkin M30U, the SN code is located at the bottom of the device, below the charging port.
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