33xx MIC Problem - GSM-Forum

Max468 · 04-02-2002, 19:16

I have a 3310 & 3330 with same problem. With normal level of my voice to my mic no sound to speaker from the other party. Only if i talk very very loud to my mic. I change both MICs from my phones but nothing. The problem must be in circuit. I check the first components after mic but ok. Any solution?

ARC · 04-02-2002, 19:23

Hi

Rehot COBBA and near arround it

IT WORKED WITH ME 100%
(There's something near COBBA under the shield, REHOT IT)

GOODLUCK!

Max468 · 04-02-2002, 19:29

Thank's from Greece.

The summer is near...

ARC · 04-02-2002, 21:43

So enjoy summer!

here is spring now

tra0416 · 04-03-2002, 09:49

for 32, try cobba.

for 33, try cobba as suggested by ARC.
, if the other party hear you a cracking voice-
check the mic condenser near Audio IC-N100

Quang Thao · 04-03-2002, 23:03

Hi
you only replace douple capacitor C120. near COBBA IC but no need to resold COBBA,
it work 10000%
brgds

M@RTY · 04-04-2002, 01:36

Hi

YOU DO NOT WANT TO REHEAT COBBA.
fault is normally caused by low voltage for the mic bias for the mic circuit, ie when you shout or whistle into mic the bias voltage increases and you get very low tx audio.

Replace Capacitor C120 and test, if still faulty replace bias transistor V101.

All Components Next To Cobba IC

Hope This Helps

Max468 · 04-04-2002, 16:09

thank's....

04-02-2002, 19:16	#1 (permalink)
Max468 Insane Poster Join Date: Jul 2001 Location: Greece Posts: 81 Member: 5475 Status: Offline Thanks Meter: 0	33xx MIC Problem I have a 3310 & 3330 with same problem. With normal level of my voice to my mic no sound to speaker from the other party. Only if i talk very very loud to my mic. I change both MICs from my phones but nothing. The problem must be in circuit. I check the first components after mic but ok. Any solution?

04-02-2002, 19:23	#2 (permalink)
ARC No Life Poster Join Date: Jun 2001 Location: UAE Age: 43 Posts: 1,419 Member: 5019 Status: Offline Sonork: 100.110196 Thanks Meter: 69	solution Hi Rehot COBBA and near arround it IT WORKED WITH ME 100% (There's something near COBBA under the shield, REHOT IT) GOODLUCK!

04-02-2002, 21:43	#4 (permalink)
ARC No Life Poster Join Date: Jun 2001 Location: UAE Age: 43 Posts: 1,419 Member: 5019 Status: Offline Sonork: 100.110196 Thanks Meter: 69	your welcome So enjoy summer! here is spring now

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04-02-2002, 19:29	#3 (permalink)
Max468 Insane Poster Join Date: Jul 2001 Location: Greece Posts: 81 Member: 5475 Status: Offline Thanks Meter: 0	Thank's from Greece. The summer is near...

04-03-2002, 09:49	#5 (permalink)
tra0416 Insane Poster Join Date: Sep 2001 Location: Philippines Posts: 79 Member: 6460 Status: Offline Thanks Meter: 1	for 32, try cobba. for 33, try cobba as suggested by ARC. , if the other party hear you a cracking voice- check the mic condenser near Audio IC-N100

04-03-2002, 23:03	#6 (permalink)
Quang Thao No Life Poster Join Date: Jul 2001 Location: Viet Nam Age: 48 Posts: 544 Member: 5487 Status: Offline Thanks Meter: 5	Hi you only replace douple capacitor C120. near COBBA IC but no need to resold COBBA, it work 10000% brgds

04-04-2002, 01:36	#7 (permalink)
M@RTY Freak Poster Join Date: Feb 2002 Posts: 193 Member: 9254 Status: Offline Thanks Meter: 4	Hi YOU DO NOT WANT TO REHEAT COBBA. fault is normally caused by low voltage for the mic bias for the mic circuit, ie when you shout or whistle into mic the bias voltage increases and you get very low tx audio. Replace Capacitor C120 and test, if still faulty replace bias transistor V101. All Components Next To Cobba IC Hope This Helps

04-04-2002, 16:09	#8 (permalink)
Max468 Insane Poster Join Date: Jul 2001 Location: Greece Posts: 81 Member: 5475 Status: Offline Thanks Meter: 0	thank's....