c902 mic level very low when calling - GSM-Forum

bazare · 09-11-2009, 07:37

C902 mic is working at a really low level in normal call (I cant use it like this). When switching to speaker, the mic works OK, also in test mode the mic works ok. I flashed the phone with 2 different firmware, and now have the latest version. Now obviously the problem is in hardware. Please I need some advice!

bazare · 09-11-2009, 22:31

Today I disasembled my C902 and found the problem. The PCB is cracked near the microphone. So is there any solution to rebuild or remake the initial circuit?

here is the photo and I hope the crack can pe seen

bazare · 09-11-2009, 22:46

korinakim · 10-26-2009, 13:35

i dont know whats wrong and its very low but i made a hole at the housing where the mic fits and its very loud know...... hope i helped!!

bcatlock1 · 10-31-2009, 18:46

the c902 has 2 mics,,,,1 on pcb,,(the obvious1-the mic hole is).
theres another,on the camera/speaker flex.....its just behind the front camera,,if you pull sliding top off mob,,you will see it,in the corner,otherside of front camera....

Lon3lyLaX · 10-31-2009, 19:58

is it the buzzler problem???

penialav · 03-06-2010, 01:04

c902 mic level very low when calling
dis is solution

penialav · 03-06-2010, 02:14

direc jump 902 mic level very low when calling

bhupi · 03-20-2010, 13:42

what is this dear i nead mic print

09-11-2009, 07:37	#1 (permalink)
bazare Junior Member Join Date: Sep 2009 Posts: 5 Member: 1114412 Status: Offline Thanks Meter: 0	c902 mic level very low when calling C902 mic is working at a really low level in normal call (I cant use it like this). When switching to speaker, the mic works OK, also in test mode the mic works ok. I flashed the phone with 2 different firmware, and now have the latest version. Now obviously the problem is in hardware. Please I need some advice!

03-20-2010, 13:42	#9 (permalink)
bhupi Junior Member Join Date: May 2005 Age: 53 Posts: 11 Member: 149213 Status: Offline Thanks Meter: 0	c902 mic what is this dear i nead mic print

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09-11-2009, 22:31	#2 (permalink)
bazare Junior Member Join Date: Sep 2009 Posts: 5 Member: 1114412 Status: Offline Thanks Meter: 0	Today I disasembled my C902 and found the problem. The PCB is cracked near the microphone. So is there any solution to rebuild or remake the initial circuit? here is the photo and I hope the crack can pe seen

09-11-2009, 22:46	#3 (permalink)
bazare Junior Member Join Date: Sep 2009 Posts: 5 Member: 1114412 Status: Offline Thanks Meter: 0

10-26-2009, 13:35	#4 (permalink)
korinakim Junior Member Join Date: Nov 2008 Posts: 29 Member: 892675 Status: Offline Thanks Meter: 9	i dont know whats wrong and its very low but i made a hole at the housing where the mic fits and its very loud know...... hope i helped!!

10-31-2009, 18:46	#5 (permalink)
bcatlock1 No Life Poster Join Date: Mar 2005 Location: wales uk Posts: 679 Member: 125632 Status: Offline Thanks Meter: 233	the c902 has 2 mics,,,,1 on pcb,,(the obvious1-the mic hole is). theres another,on the camera/speaker flex.....its just behind the front camera,,if you pull sliding top off mob,,you will see it,in the corner,otherside of front camera....

10-31-2009, 19:58	#6 (permalink)
Lon3lyLaX Junior Member Join Date: Oct 2009 Location: Asia,Malaysia Posts: 9 Member: 1149712 Status: Offline Thanks Meter: 1	is it the buzzler problem???