How do I stop a Unitron hearing aid from chirping or shrieking?
Answer
Constant chirping or shrieking on a Unitron aid is often feedback from wax, a poor seal, or a damaged microphone/receiver opening. Inspect and clear the sound outlet and dome or mold, reseat the aid, and see a hearing care professional if the noise continues.
Before you start: stop right away if…
- Do not insert sharp objects deep into the hearing aid receiver or microphone openings.
Follow these steps
Remove and inspect the left aid
Take out the left Unitron aid and look at the sound opening, wax filter or wax guard, dome or earmold, and any vent. Check for wax, moisture, cracks, or a tip that is not fully seated.
You should see: You can see whether the outlet or tip is blocked, damaged, or loose.
Clear wax and reseat the tip
Replace a disposable wax filter if your model uses one, or gently clear visible wax with the cleaning tool recommended for Unitron. Reattach the dome or mold firmly so it seals in the ear canal.
You should see: The sound path looks clear and the tip sits securely before reinsertion.
Test for feedback after reinsertion
Insert the left aid correctly, turn it on, and listen. If it still shrieks, cup your hand briefly over the ear; strong feedback that changes with hand position often points to a seal or fit issue rather than a dead battery alone.
You should see: The noise stops, lessens, or clearly tracks with fit/seal problems.
Try a fresh battery or recharge cycle
Install a new battery of the correct size, or fully charge a rechargeable Unitron aid, then retest the left side only.
You should see: You know whether power level changes the chirping.
See a hearing care professional if it continues
If the left aid still chirps after cleaning, reseating, and a power refresh, contact your hearing clinic or a Unitron-compatible provider. Ask them to check the receiver, microphone, and programming rather than forcing more home repairs.
You should see: A professional can confirm whether a part replacement, cleaning service, or repair is needed.
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Extra tips
What to look for: Chirping or shrieking only on the left Unitron aid, wax at the sound outlet or vent, loose dome/mold, and whether the noise stops when the aid is cupped in your hand
Before you change anything: Work over a clean towel so small parts are not lost. Use only cleaning tools approved for your Unitron model. Do not poke deep into the receiver with sharp objects. Have your hearing care professional’s contact info ready if the noise continues.