How to solve failures yourself
In selecting your PRISMA 2 hearing instruments you have chosen extremely dependable devices. However, should a fault occur, it can usually be corrected quickly.
Important tips:
If the instrument whistles
Test the instrument yourself by closing the sound outlet opening with your fingertip.
If the whistling disappears, the instrument is in order.
Check that the ear mould sits properly in your ear. Also test the hearing tube for leaks.
If the whistling noise is still audible, only your hearing instrument specialist can provide assistance.
Sound
outlet opening
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