Sudden sound increases in Phonak Hearing Aid
My son 12 years has moderate to severe hearing loss and wears hearing aids. We live in Pakistan.
For last couple of weeks he has started to complain that his hearing aids sound goes up suddenly for 15-20 seconds then comes back to normal. His PHONAK Naida V90 aids were giving some issues within a year (company says corrosion due to sweat !! ) so we got the SEM (inside machine) replaced and they are supposed to be as good as new as per PHONAK management (is this correct ? or there may be other issues…).
With this new replaced SEM pair he has this complain of sound going up and down few times a day in a normal home environment as well as outside. Fan noise also goes up as well as conversation level. He starts feeling uncomfortable suddenly, reduces the volume, but then as it comes back to "normal" he has to increase volume again.
His Audiogram is okay almost same level as before. My fear is could this be something to do with his loss or some internal ear issue which should be concerning ? He also experienced Tinnitus issue few times. It seems Audiologists don't understand much here, they simply sell hearing aids and can't figure out what to do for such things. Any help and guidance what to do ?