Introduction
In cell phones, during a call, when you
speak, your voice goes into the mic. A mic converts voice into electrical
signal. It is also called microphone and mouthpiece. It will always be at the
bottom, inside a cell phone. If it becomes faulty, the person you are talking
to will not hear your voice. You can try using an earphone (headset) and try if
your voice is being transmitted! The method to check it will be the same for
any brand or model of a mobile phone or a tablet be it an iPhone, a Samsung
Galaxy.... You can check it with either a digital or an analog multimeter, but
most technicains today prefer digital multimeters as analog ones are outdated.
This guide will offer you
the detailed instructions on how to check mic of a cell phone. Follow
the step-by-step repair instructions，We’ll
get your iPhone looking brand new again in no time! All the DIY phone repair parts
and tools used in this guide can be found here.
Recommended Tools:
Multimeter
Steps
1 Turn off your
cell phone and tear it down carefully.
2 Now remove the
mic which is located at the bottom. There is a small hole at the bottom of the
casing (body panel) for the voice to enter the mic. The mic will always be
exactly below it inside the casing.
3
Now keep the multimeter on resistance
setting. It may be indicated by the symbol ‘Ώ’. In resistance too, there are
many settings. Keep it on 20K or 20KΏ setting.
4
Now touch the tip of the 2 red and black probes
of the multimeter to the 2 terminals (pins) of the mic. Now blow air with your
mouth into its hole. If the reading on the screen increases rapidly, your mic
is good and working. In most mics, the reading rapidly increases to around 100.
And if the reading is still 1 after blowing air, your microphone is faulty.
Comments
Post a Comment