iPhone 3GS ABSOLUTELY NO SOUND - GSM-Forum

Burnt Cobba · 05-05-2010, 16:05

Hi mates

anyone ever met this problem? No ringer, no earpiece, no mic. NOTHING that is related to sound comes out or in.

Changed lower module, changed also earpiece together with LCD and touch. Just nothing. Charging is ok.

I believe some IC is the problem.... however i do not know which is it.... guess some amplifier. Have no info on this at all. There appears no water damage of any sort.

Any help appreciated mates

thanks

nafg · 05-05-2010, 22:06

yes ,solve many iphone rehot and press the audio codec work form my

ps. solution speaker

br.
nafg

mobilecitycbk · 05-08-2010, 13:59

brother change the audio codec your problem will solve

Br
Asghar Hussain

Burnt Cobba · 05-08-2010, 16:47

ok figured out that ... but i have 1 slight problem

....

Which is it for the 3GS???? NOT the 3G

portalgsm · 05-10-2010, 02:20

flex audio solution --- ic audio pa

Jumea · 05-13-2010, 15:48

Hi Burnt cobba,

I have the same problem with iPhone 3GS. For 3G this is no problem, but where can i find audio codec for 3GS? Anyone who can help us with this problem?

Best regards,

Jumea

Burnt Cobba · 05-13-2010, 16:13

i suppose it is embedded in that IC which is the same position of the 3G. Problem is i cannot find any info if this is it or not damn. Apple are lip bounded on their hardware.... not even a service manual of any sort.

Muneeff · 06-17-2010, 18:01

I'm also having the same problem, I've tested my logic board on a working iPhone back cover assembly and still no sound, so it's 100% the board it's self, I cannot find any diagrams for 3gs,

Can anyone post a guideto where audio codec ic is

Muneeff · 06-18-2010, 02:55

this diagram shows location of audio codec, will attempt to rehot tonight

Burnt Cobba · 06-18-2010, 05:36

ah ok great the Cirrus CS42LS6f ... will have a shot today and be back with result.

alexlaboratory · 06-18-2010, 07:25

i would wash the board forst just in case was liquid damage, then re-flox the ic
note: if temperature to high over 250 celcuis you will cook the chip

Muneeff · 06-18-2010, 09:22

i just pulled the metal cover off the logic board and located the audio codec

attempted to rehot but still no sound, where can i buy a replacement CS42L61

Burnt Cobba · 06-18-2010, 13:32

Quote:

Originally Posted by alexlaboratory

i would wash the board forst just in case was liquid damage, then re-flox the ic
note: if temperature to high over 250 celcuis you will cook the chip

180 /190 deg C is the melting point of the solder so that should be the limit. More than that will damage the IC itself.

Also there is no guarantee that the problem is from the IC. Could be any of the surrounding components too.

alexlaboratory · 06-22-2010, 00:42

Quote:

Originally Posted by Burnt Cobba

180 /190 deg C is the melting point of the solder so that should be the limit. More than that will damage the IC itself.

Also there is no guarantee that the problem is from the IC. Could be any of the surrounding components too.

my good frind, iphone use lead free soldering, 99.9 % of products do atm
use 250 celcius to re-reflow not to solder or remove 180-190 just does nothing

u could have a v-rail missing but with out schematics is like looking in the dark.
to check v rail only way is to compare with a working iphone

Burnt Cobba · 06-22-2010, 05:25

Quote:

Originally Posted by alexlaboratory

my good frind, iphone use lead free soldering, 99.9 % of products do atm
use 250 celcius to re-reflow not to solder or remove 180-190 just does nothing

u could have a v-rail missing but with out schematics is like looking in the dark.
to check v rail only way is to compare with a working iphone

Holy ****! 250?

Isn't that dangerous for the surrounding components?

Also since the BGAs are glued , doesnt the heat increase at a higher rate in the IC than the rest of the surroundings?

thanks for sharing the info mate

05-05-2010, 16:05	#1 (permalink)
Burnt Cobba No Life Poster Join Date: Apr 2002 Location: The Green Mile Posts: 3,653 Member: 11325 Status: Offline Thanks Meter: 266	iPhone 3GS ABSOLUTELY NO SOUND Hi mates anyone ever met this problem? No ringer, no earpiece, no mic. NOTHING that is related to sound comes out or in. Changed lower module, changed also earpiece together with LCD and touch. Just nothing. Charging is ok. I believe some IC is the problem.... however i do not know which is it.... guess some amplifier. Have no info on this at all. There appears no water damage of any sort. Any help appreciated mates thanks

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05-08-2010, 13:59	#3 (permalink)
mobilecitycbk No Life Poster Join Date: Mar 2007 Location: IN FRONT OF YOU Age: 44 Posts: 1,403 Member: 475440 Status: Offline Sonork: 1604067 Thanks Meter: 965	brother change the audio codec your problem will solve Br Asghar Hussain

05-08-2010, 16:47	#4 (permalink)
Burnt Cobba No Life Poster Join Date: Apr 2002 Location: The Green Mile Posts: 3,653 Member: 11325 Status: Offline Thanks Meter: 266	ok figured out that ... but i have 1 slight problem .... Which is it for the 3GS???? NOT the 3G

05-10-2010, 02:20	#5 (permalink)
portalgsm Freak Poster Join Date: Jan 2007 Location: colombia Posts: 275 Member: 423627 Status: Offline Thanks Meter: 261	flex audio solution --- ic audio pa

05-13-2010, 15:48	#6 (permalink)
Jumea Junior Member Join Date: Sep 2007 Posts: 6 Member: 582179 Status: Offline Thanks Meter: 1	Hi Burnt cobba, I have the same problem with iPhone 3GS. For 3G this is no problem, but where can i find audio codec for 3GS? Anyone who can help us with this problem? Best regards, Jumea

05-13-2010, 16:13	#7 (permalink)
Burnt Cobba No Life Poster Join Date: Apr 2002 Location: The Green Mile Posts: 3,653 Member: 11325 Status: Offline Thanks Meter: 266	i suppose it is embedded in that IC which is the same position of the 3G. Problem is i cannot find any info if this is it or not damn. Apple are lip bounded on their hardware.... not even a service manual of any sort.

06-17-2010, 18:01	#8 (permalink)
Muneeff Junior Member Join Date: Jun 2010 Posts: 9 Member: 1326899 Status: Offline Thanks Meter: 0	I'm also having the same problem, I've tested my logic board on a working iPhone back cover assembly and still no sound, so it's 100% the board it's self, I cannot find any diagrams for 3gs, Can anyone post a guideto where audio codec ic is

06-18-2010, 02:55	#9 (permalink)
Muneeff Junior Member Join Date: Jun 2010 Posts: 9 Member: 1326899 Status: Offline Thanks Meter: 0	this diagram shows location of audio codec, will attempt to rehot tonight

06-18-2010, 05:36	#10 (permalink)
Burnt Cobba No Life Poster Join Date: Apr 2002 Location: The Green Mile Posts: 3,653 Member: 11325 Status: Offline Thanks Meter: 266	ah ok great the Cirrus CS42LS6f ... will have a shot today and be back with result.

06-18-2010, 07:25	#11 (permalink)
alexlaboratory No Life Poster Join Date: May 2008 Location: Hell and beyond Posts: 914 Member: 771230 Status: Offline Thanks Meter: 773	i would wash the board forst just in case was liquid damage, then re-flox the ic note: if temperature to high over 250 celcuis you will cook the chip

06-18-2010, 09:22	#12 (permalink)
Muneeff Junior Member Join Date: Jun 2010 Posts: 9 Member: 1326899 Status: Offline Thanks Meter: 0	i just pulled the metal cover off the logic board and located the audio codec attempted to rehot but still no sound, where can i buy a replacement CS42L61