Check for Obstructions: If the stethoscope is commonly carried in a pocket, or hasn't routinely been cleaned, it is possible that lint or dirt could be obstructing the sound pathway. ... If the diaphragm is open, the bell will be closed, preventing sound from coming in through the bell, and vice versa.

How many years does a stethoscope last?

Stethoscope manufacturers recommend for the device to be replaced about every two years, but medical professionals remain wary about this advice. For optimal use, people should be on the lookout for signs the device has worn down through extended use.

Can a stethoscope go bad?

Over time your stethoscope may accumulate dirt, earwax and debris which may impair the sound pathway. Routinely clean the ear-tips and stethoscope head. The Seal.