New Mic not working - Note 7


Philbo

Members
Oct 21, 2020
2
3
Hello guys

I recently bought a used note 7 with cracked screen fixed it and now the mic doesnt work properly in every app.
When i am recording a video - no problems
when i am recording a voice message on telegram - no signal
when i am recording in the built in recorder - First i get a good sound then it fades of into very low volume and sounds strange

What i did
I tried out Miu 11, 12, 10 - no change
i tried google Help Voice turning off - no change
i cleared the cache - no change
bought a new module with main mic on it -> no change
CIT - Submic - 22db - Mainmic -1db -> error
bought a second phone with cracked display - only changed the display and kept all hardware from the new used phone -> No change


Anyone here having a idea what i can do?

Edit: When i use the recorder and change the setting to music so it uses both mics the Upper Mic works flawless. Is there a way to change the main mic to use the upper mic?

The new display wasn isolated on the ground where the mic chip from the usb board touches it. May that have been caused a circuit problem and destroyed the chip? just from touching something metal?
 
Last edited:

Philbo

Members
Oct 21, 2020
2
3
solved it. the contact on the mic from the new display was not isolated so i guess that somehow everytime destroyed the mic which had contact to the metal.