GSM-Forum - Iphone hardware and software solutions in 24 hrs

I have a 3gs which does not power on.
and it does not charge.
Got it from a collegue.
Phone has no water damage.

Fuse on the docking was broken.i replaced that.
So the 5V from the charger is on the board.
Measured on the 2 inductors near the docking flex connector.

When i connect the charger trhe display shows the battery icon with a small red line. But there is no current going into the battery.
The battery can be charged outside the phone.

So i charged it outside the phone, and put it back, but the phone is not responding to the power on button?

is there a relation in the both issues.
So is 1 component responsable for not charging and not starting up?

Check blue fuse for continuity if open make jumper,it is located near of
antenna connector to left.

secaces

10-18-2011 10:36

I have Iphone 4 no network, no wifi no bluethod no baseband
upgrad to ios 5, downgrad to 3.4.5 and no solution

Wites OM Tesla

10-18-2011 10:53

Quote:

Originally Posted by secaces (Post 7813598)

I have Iphone 4 no network, no wifi no bluethod no baseband
upgrad to ios 5, downgrad to 3.4.5 and no solution

Try other battery.;)

michala joan

10-18-2011 12:41

hi sir, pls help me fix iphone 3g screen light problem

Wites OM Tesla

10-18-2011 12:59

Quote:

Originally Posted by michala joan (Post 7813824)

hi sir, pls help me fix iphone 3g screen light problem

If phone water damaged replace coil.

X10robin

10-18-2011 17:37

Quote:

Originally Posted by Wites (Post 7813596)

Check blue fuse for continuity if open make jumper,it is located near of
antenna connector to left.

Sorry but that i can not find.
Could you please show in a picture?

secaces

10-18-2011 19:19

same problem

Quote:

Originally Posted by Wites (Post 7813657)

Try other battery.;)

I try other battery but same problem,

Other solution please

Wites OM Tesla

10-18-2011 19:25

Quote:

Originally Posted by secaces (Post 7814684)

I try other battery but same problem,

Other solution please

Check battery Connector on board if clean soldered no oxidation.

Wites OM Tesla

10-18-2011 19:42

Quote:

Originally Posted by X10robin (Post 7814445)

Sorry but that i can not find.
Could you please show in a picture?

Up of antenna sw on this photo.
http://img690.imageshack.us/img690/7...ennaswitch.jpg
By wites13 at 2011-09-30

X10robin

10-18-2011 21:43

Quote:

Originally Posted by Wites (Post 7814720)

Up of antenna sw on this photo.
http://img690.imageshack.us/img690/7...ennaswitch.jpg
By wites13 at 2011-09-30

OK you mean the sence resistor.
That i have measured and is OK.

Maybe one of the FET's has broken down. (the Si8402 or the Si8409)

Chemico

10-18-2011 22:20

My 3Gs picks weak signals.metal prong near do not remove sticker is broken and managed to solder a small metal piece at the same place.Most of the time phone works fine but with poor signal(able to make and recieve calls).Some times it just drops to No service.What could be the problem.(phone fell down before this issue).Plz help.

BesTCooL

10-18-2011 22:47

hi wites 3gs microphone sound very bad parazzit and very little what u think

secaces

10-19-2011 08:48

same problem

Quote:

Originally Posted by Wites (Post 7814697)

Check battery Connector on board if clean soldered no oxidation.

thanks but also battery connector is good

other solution ?

R1chH3nson

10-19-2011 09:00