31
Symptom
Cause
Possible remedy
Feedback
whistling
Earmould loose
Remove and
reinsert
Earmould too
small
New earmould
required
Crack in tubing
Replace tubing
Crack in hook/
elbow
See your hearing
healthcare
professional
Inter-
mittent
sound
Battery contacts
dirty
Clean battery
contacts
On/off switch dirty Push the switch
back and forth a
couple of times