Crackling / Cutting in and out

Q: Dry the hearing aid safely

Moisture may be interrupting the sound. Switch the hearing aid off. Remove a disposable battery if fitted; do not open a sealed rechargeable aid. Use a manufacturer-approved drying kit overnight. Test only once the hearing aid is dry.

Q: Arrange a battery-contact check

Green or white residue can indicate corrosion. Stop using the hearing aid. Do not scrape the contacts or apply cleaning fluids. Ask the clinic to check the battery compartment.

Q: Try a fresh disposable battery

An exhausted battery may cause intermittent sound. Remove the old battery. Remove the tab from a fresh battery and wait 1–2 minutes, or follow the pack instructions. Fit it the correct way round and close the door gently.

Hearing aid crackling or sound that cuts in and out can be caused by moisture, a weak battery or a worn part. Think about whether it started after rain, exercise or humid weather. Gentle drying and a fresh disposable battery may help, but corrosion or damaged parts need professional attention. Do not open the case or scrape battery contacts. If the hearing aid becomes hot, swollen or damaged, stop using it and contact the clinic rather than trying more home checks.

What type of hearing aid do you have?

Blue line drawings of a receiver-in-canal aid with thin wire, a behind-the-ear aid with tubing, and a custom in-the-ear aid

Possible causes and checks

Dry the hearing aid safely

Moisture may be interrupting the sound.

Read these checks

Arrange a battery-contact check

Green or white residue can indicate corrosion.

Read these checks

Try a fresh disposable battery

An exhausted battery may cause intermittent sound.

Read these checks

Arrange a sound and repair check

Persistent crackling may mean internal moisture or a worn component.

Read these checks