hearing aid not woking,what Need to do  if the hearing aid has no sound?

There is no sound in the hearing aid, possible problems: 1. The hearing aid malfunctions or the contact is poor, resulting in the hearing aid being silent; 2. The hearing aid microphone or the speaker sound hole (earplug, ear mold) is blocked by dirt or water vapor, so there is no sound; During the use of the hearing aid, some of the function switches of the hearing aid are touched, resulting in no sound of the hearing aid; 4. The hearing aid battery is dead, so there is no sound. There are many reasons for the silent situation. It is recommended that you take the hearing aid to the professional hearing aid fitting center, and ask the professional fitter to help you.