Iphone hardware and software solutions in 24 hrs

[limespirit]

Originally Posted by efe_13

hello few days ago i bought 4s. it crash on floor and some things broken on motherboard. isearched on net and i find missing part is power amplifier. but i don t know what is the other parts. i cant turn it on with battery.i unplug battery. i plug the charger. after when i try turn on appears apple logo but like 5 seconds later its gone. this happens again and again.i find avago power amplifier internet but i dont know where can i find other 2 missing parts. i haven t got any soldering skills. is this process can be possible without error. i ask this. sorry for english.
imageshack .us/a/img842/4056/uzs5. jpg
imageshack .us/a/img43/3905/oyox. jpg

Your first image shows a missing Power amplifier which is responsible to amplify signal for both GSM (2G) and 3G(Band 1 and 8).

The second pictures there is missing a CPU BUCK coil rated at 1.5uH - 1.45A - 159ohm (could be either found in another 4S or other phones) and the other missing component is a capacitor.
The coil is needed to amplify voltage for the CPU core while the capacitor is not needed.

For now I would solder the coil and try to power on the phone, as it should at least be able to boot, but not able to get signal as of the missing avago pa. Do not use a lot of heat as the NAND is very near and could easily overheat both the NAND and A5 processor.

[tikinho123]

hello guys , I have an iphone 4 that doesnt power at all, I was checking for caps around PMIC , but still nothing, PMIC heats too much! any suggestions?

[efe_13]

Originally Posted by limespirit

Your first image shows a missing Power amplifier which is responsible to amplify signal for both GSM (2G) and 3G(Band 1 and 8).

The second pictures there is missing a CPU BUCK coil rated at 1.5uH - 1.45A - 159ohm (could be either found in another 4S or other phones) and the other missing component is a capacitor.
The coil is needed to amplify voltage for the CPU core while the capacitor is not needed.

For now I would solder the coil and try to power on the phone, as it should at least be able to boot, but not able to get signal as of the missing avago pa. Do not use a lot of heat as the NAND is very near and could easily overheat both the NAND and A5 processor.

Thank you. Actually i cant buy another iphone motherboard. And i think i cant find the coil on other phones. Is that coil same size and same shape on other phones? Do you know where can i find this parts. On internet. Or stores... If you give me a link for the missing parts i wiil very happy for it

I can take it in recovery mode. I try restore but itunes gives 21 error code. If i understand correctly if i solder the coil iphone can be turn on.

[limespirit]

Originally Posted by efe_13

Thank you. Actually i cant buy another iphone motherboard. And i think i cant find the coil on other phones. Is that coil same size and same shape on other phones? Do you know where can i find this parts. On internet. Or stores... If you give me a link for the missing parts i wiil very happy for it

I can take it in recovery mode. I try restore but itunes gives 21 error code. If i understand correctly if i solder the coil iphone can be turn on.

Usually these type of components is difficult to find to buy as these only sell in large quantities. The best option for you would be to seek a phone repair centre and ask for scrap boards, these boards would be perfect for you to take components from them even in the future.
In case you have a spare dead iphone 4 board you can take the coil which is used to supply the LED driver.

[limespirit]

Originally Posted by tikinho123

hello guys , I have an iphone 4 that doesnt power at all, I was checking for caps around PMIC , but still nothing, PMIC heats too much! any suggestions?

See my reply further up: http://forum.gsmhosting.com/vbb/f631...ml#post9531250

[rad5ive]

thanks for all hardware solutions

[parkcity2418]

i have an iphone 4 unlocked the ear piece, and the mic not working i've replaced both but still the problem any idea? guys please help thanks

[toonsi]

hi guys,
i've a little problem with my iphone 4s iOS 6.1.3, when i try to install an application via itunes every thing is ok but in last stage when copying the application to the phone and make synchronization its fails i don't know why ? must i have a jailbroken iphone to do that ?
another hardware problem with my friend's iphone he has a 3gs 8gb he made a mistake and he had a bricked baseband, is there a solution to change the toshiba chipset by another one ?
Thanks

[ifamrm]

iPhone 4 switches off automatically in 1 minute. Any Solution.

[limespirit]

Originally Posted by parkcity2418

i have an iphone 4 unlocked the ear piece, and the mic not working i've replaced both but still the problem any idea? guys please help thanks

Are the earpiece and mic not working only on call?

[limespirit]

Originally Posted by toonsi

hi guys,
i've a little problem with my iphone 4s iOS 6.1.3, when i try to install an application via itunes every thing is ok but in last stage when copying the application to the phone and make synchronization its fails i don't know why ? must i have a jailbroken iphone to do that ?
another hardware problem with my friend's iphone he has a 3gs 8gb he made a mistake and he had a bricked baseband, is there a solution to change the toshiba chipset by another one ?
Thanks

The baseband replacement for a 3GS requires both the toshiba flash and the baseband processor replacement. Not an easy job

[limespirit]

Originally Posted by ifamrm

iPhone 4 switches off automatically in 1 minute. Any Solution.

Try changing the battery with a genuine one as this might be a watchdog problem

[ifamrm]

Originally Posted by limespirit

Try changing the battery with a genuine one as this might be a watchdog problem

Even after changing the battery still same problem

[limespirit]

Originally Posted by ifamrm

Even after changing the battery still same problem

Have you tried restoring the phone to latest firmware? Also what is the history with the phone?

[keyurpatel1981]

after change speaker proximaty sensor not work plz help urgent