When the hearing aid user finds that the hearing aid cannot make a sound or the sound is abnormal, the first reaction is that the hearing aid is broken. However, some of the small problems that lead to the hearing aid “no voice or abnormal voice” often do not need to be sent to the hearing aid manufacturer for protection. Do you know what these “small problems” are? How can we “suit the case” in case of these problems? Jinghao listening will give you a general explanation.

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Question 1

The sound is very weak, even if the volume is turned up, it can’t be solved

Method 1: check the battery

The battery life is generally 7-15 days based on the 8-hour daily use.

If the use time is too long, the output volume of the hearing aid will be weak. At this time, the battery of the hearing aid can be replaced.


When the paper on the surface of the new battery is torn, the adhesive may remain on the battery and affect the contact. At this time, the surface of the battery can be scraped lightly with the fingernail cover, and the battery door can be installed after waiting for 2-3 seconds.

Method 2: check the earwax net cover (for customized machine)

The earwax proof device of the customized machine is easily blocked by cerumen, which hinders the sound produced in the hearing aid.

If there is no abnormal sound after taking out the anti earwax net cover, it indicates that the net cover is blocked, which is the cause of the problem.

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Regular care and maintenance is very important for hearing aids to prevent moisture and dirt. Cerumen blockage is one of the important reasons for the increase of hearing aids repair rate.

Method 3: check the damper (for the ear back machine)

The damper is usually placed in the ear hook of the ear back hearing aid, which is used to smooth the resonance peak and make the sound quality heard by the hearing aid user softer.

The damper in the ear hook is easy to be blocked by cerumen and oily secretion, so that the sound is blocked. Remove the ear hook. If the hearing aid makes no abnormal sound, it can be used normally after changing the ear hook.

Question 2

The sound is intermittent, sometimes strange, sometimes back to normal

Method 1: check the battery

The service life of the battery will not only affect the sound level of the hearing aid, but also affect the sound quality.

The weak electric quantity will make the energy supply of hearing aid unbalanced, thus producing intermittent volume output.

Therefore, it is very necessary to replace batteries regularly and not use waste batteries for the maintenance of hearing aids.

Method 2: check the maximum output in the debugging software

For some hearing aids that use “peak clipping” for output limitation, if the maximum output value is reduced blindly, there will be more peak clipping and obvious distortion of hearing aids, which will make some hearing aid users unable to hear large sound or the feeling of “sometimes hear sound, sometimes hear no sound”.

Question 3

Hearing aid squealing

Whistling is a key factor to affect the satisfaction of hearing aid users, and it is also a thorny problem encountered in the process of debugging and fitting.

In fact, squealing can be divided into external squealing and internal squealing. The hearing aid user and the fitting examiner can deal with it through correct judgment methods, so as to improve the satisfaction of hearing aid wearing.

Method 1: check the ear mold

For hearing aid users with heavy hearing loss, the fitting examiner will often customize the ear mold to increase the sealing of hearing aid.

However, if the ear sample is not made properly and cannot match the ear canal of the hearing aid user, the sound will leak out from the gap between the ear canal and the ear mould, resulting in a howl.

At this time, the ear mold and hearing aid can be completely worn on the ear of the user of the hearing aid. If the ear mold is tightly plugged with fingers and the hearing aid no longer generates squeal, then it can be determined that the cause of squeal comes from the ear mold.

Method 2: check the ear hook (for the ear back machine). At present, most of the ear hooks used in the market are made of plastic. Long term use may cause the joint of the ear hook and the body of the hearing aid to break, resulting in sound leakage and whistling.

Replace the ear hook with a new one and wear a hearing aid for the user. If the hearing aid no longer screams, it can be determined that the cause of the scream comes from the ear hook.

Method 3: check the air vent

Vent is often used to improve the wearing comfort of hearing aid users and solve the ear blocking effect.

However, if the size of the air vent does not meet the hearing loss of the hearing aid user, there will be too much sound leakage, resulting in whistling.

The fitting examiner should correctly judge whether the user needs the vent and the size of the vent according to the hearing loss of the hearing aid user, so as to avoid the whistling caused by the improper vent.

Method 4: check microphone or receiver

After all the external causes are eliminated, if the hearing aid will still generate a scream, then the scream comes from the inside of the hearing aid.

Scream from microphone: use your fingers to block the sound inlet of the hearing aid. If the hearing aid continues to scream, you can judge that the internal scream is from the microphone.

Scream comes from the receiver: block the outlet of the hearing aid with your fingers. If the hearing aid continues to scream, you can judge that the internal scream comes from the receiver.

The internal screaming problem caused by the falling off of microphone or receiver shall be sent back to the hearing aid manufacturer for handling.

Method 5: check the high frequency gain

When the hearing loss of hearing aid users is very serious, the match maker often increases the high-frequency gain to compensate for the hearing loss of users’ high-frequency part.

However, more high-frequency gain will make the receiver transmit.

For hearing aid users with heavy high frequency hearing loss, the fitter may consider using a high-power hearing aid or turning on the “frequency shift” function. With the increase of use time, all kinds of hearing aid “small problems” will occur.

In fact, the occurrence of “minor defects” does not mean that the hearing aid is broken. As long as the hearing aid user or the fitting examiner can correctly determine the problem and find a suitable solution, they can “suit the case” and quickly solve the problem to improve the user’s satisfaction with wearing the hearing aid.

Jinghao hearing aid reminder: hearing aid wearing requires professional “matching”, so it is very important to choose a professional hearing aid matching center and a hearing aid tester! If you have any hearing problems, you can call Jinghao for consultation, or come to the matching center for experience. Hearing aid free consultation Tel.: + 86-18566295705


Link:Small problems of hearing aids

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