Identification of Noise Source

IDENTIFICATION OF NOISE SOURCE


Identify the condition under which the noise occurs, and check the noise filter on the related part.

Reference:
Make sure first that there is no noise from outside.
Failing to do so makes the noise source detection difficult and leads to misunderstanding.
The noise should be removed in descending order of loudness.
Setting the radio untuned makes noise noticeable, making the recognition of the phenomenon easier.