You could damaged some component,check entire board with an microscope
for missing/damaged components.

sir any idia for iphone 3gs changer show but not changing any idai

any ideas?

Then try power on without ON/Off flex connected.
Check Green or Blue color fuse,if open make jumper.

My iPhone 3GS 32GB
firmware 4.2.1 JB
Modem Firmware is 05.16.02
I usually used my phone as testing parts sometime.
Everything work fine except GPS Poor reception when using Tom Tom or Google Maps.
I did test the new Wifi connector BUT still no luck to get the GPS working.
Is there any chance that my iPhone missing some tracks then made my iPhone GPS not working pls? Any help would be appreciated.

Did you check blue fuse?

i have recently change battery and lcd in my iphone 3g. but after that my iphone can't work properly. whenever i press sleep/power button iphone backlight tun off and phone become hang. and after some time it automatically restart again and again. i restore it to stock firmware but same problem. please help

Iphone 3GS no audio from speaker...
 

IPhone 3GS.
I recently changed the number 3 and speaker cable, but still no sound from the speaker.
running ,headphones hands free work. Yet the speaker does not hear anything.
Do you have any solution.
Say that it is possible to be in phone contact with liquid ....
Thanks

Try replace speaker if not solve,remove DZ1 & DZ12 refer to schematic they
may short after water;).

2g dead
 

my 2g hav low bluetooth covereage so i try to repair ,i see the bluetooth wire is broken i reassemble phone but not power on insert usb, charger, no responce pls hlp

fuse is ok by the way

iph 2g hme button ways. i have changed flex but nt helped. can sum one provde hme button ways

Check home button with multimeter press and see if it will short.

iphone 4 mic spk loudspk not work
 

hi
my iphne 4 after water mic spk & loud spk not working when i call not active the loud speaker button no sound help me

ultrasn0w unlocked i--hone