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Troubleshooting - NANO SIGMA User Manual

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Feedback / Chirping:
If you hear a high-pitched sound when you put the device
in the ear canal, you're having feedback. Change between
different dome sizes to one that fits better, and insert the

Troubleshooting

device as swiftly as possible to avoid feedback.
Battery doesn't last:
Make sure you're using brand new batteries straight from
the package. Its very important that you let the batteries
"breathe" or "take air" for around 5 minutes before inserting
them into your device. Furthermore, whenever you're not
using your hearing aids expel the battery or open the battery
FIXING COMMON ISSUES OF YOUR DEVICE
door to turn off the device; this will save a lot of power.
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