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View Full Version : I hear my voice in N620 ...!!!

Byte
11-28-2004, 18:21
Hi ...,

I have a samsung N620 the mic does not work on the other party ..., but i can hear my voice in the speacker ...,


any suggestions ...?
cgsm
11-30-2004, 18:59
JUST REFLOW THE BOARD.
and giv little more heat to mcu.
nen77
12-06-2004, 12:46
maybe you chose mic stopped from menu..
i dont think is hardware problem...
try reflash the unit
MAJESTIC PIRATE
12-07-2004, 15:39
i think that is a mic problem only !!!!!!
nen77
12-07-2004, 15:44
is not the mic...for sure..
phone have audio circuit ok...it has to be software ...
plese post result how problem has been solved
ahmed nokia
12-19-2004, 13:32
hi man i have this proplem in the last time
try chang handfree jak it will be jop :rolleyes:
rajumobile
12-19-2004, 14:45
Never try to reheat glued ICs ( CPU ). You can destroy the phone. Your audio path seems OK. you can put some sort of packing ( to press it on the board ) on CPU and audio ICs to solve this problem.

Regards..
nen77
12-20-2004, 13:20
Never try to reheat glued ICs ( CPU ). You can destroy the phone. Your audio path seems OK. you can put some sort of packing ( to press it on the board ) on CPU and audio ICs to solve this problem.

Regards..



man wake up we are removing glue from almost 1 year

for glued ic you can also use special hotting "plate"
cellularry
12-20-2004, 20:38
man wake up we are removing glue from almost 1 year

for glued ic you can also use special hotting "plate"
what are you using to remove the glue.
thx
cgsm
12-22-2004, 19:17
RAJUMOBILE ur correct,
dear friend nen77 please explain how to remove the glud ic from samsung boards pls explain
thanks a lot
nen77
12-23-2004, 13:05
at samsung models you need hot air and cutting tools...
hot the glued ic at 320-350 celsius and force the ic with a tool it wiil desolder ...just test on a dead board.....the hard part is to clean the mainboard....
i use a very sharp tip at 430 celsius...and i remove the glue by presind the tip to glue .......

.....this is for samsung


hard part is for nokia ...there i use a removing lichuid

a atached here the pdf wich was atached to removing glue solution







the way for using removing glue solution is not soo easy

i use a small piece of coton ...and a small quantity of solution ...i put the cooton on ic wich has to be removed...i put the board in a sealed plastic bag...and i let the mainboard for 1-3 days
after 2-3 days i use hot air for desoldering ic ....i clean remaing glue on the mainboard with a soldering iron at 420 degres
doctorvatson
12-23-2004, 14:53
and after 430C 9 of 10 phone have to be swapped :):):)
nen77
12-23-2004, 19:04
and after 430C 9 of 10 phone have to be swapped :):):)


soldering iron not hot air tested on many phones...
but solution is working on 70% cases
pava
12-25-2004, 02:17
no chanses the remove glue. i try .REGARDS
nen77
12-25-2004, 15:30
no chanses the remove glue. i try .REGARDS



im not the first one wichis doing that


i will make photo to a mainbord of 6310i with uem replacement(monday iwil make photos)

i will show the steps.....
anyway...i dont need to be belived....i realy doing this..and few frend of mine are doing same thing...there are few posts on this forum also about removing glue
nen77
12-25-2004, 15:37
http://forum.gsmhosting.com/vbb/showthread.php?t=157093&highlight=remove+glue

http://forum.gsmhosting.com/vbb/showthread.php?t=163447&highlight=remove+glue


http://forum.gsmhosting.com/vbb/showthread.php?t=172125&highlight=remove+glue

http://forum.gsmhosting.com/vbb/showthread.php?t=173472&highlight=remove+glue


and some photos with tools
doctorvatson
12-26-2004, 19:29
@Byte
in your case just reset phone and reflash it.
cgsm
12-27-2004, 18:30
nen77 i try which was prescribed by u.it works no dough.