Iphone 4s error 1 how to measure voltage – iphone , badly help needed looking help anybody

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Iphone 4s error 1 how to measure voltage – iphone , badly help needed looking help anybody

On January 27, 2015, Posted by , In iPhone, With Comments Off on Iphone 4s error 1 how to measure voltage – iphone , badly help needed looking help anybody

Hello guys, its that time again, another error 1.
Id like to start this thread Along with these words, i know there is alot of topics about this error but because im not a professional technician i dont feel that they answer everything that i want.


The iphone 4s im trying to fix was damaged by water, my friend dropped a glas of water near the phone and didnt notice for about 20 minutes, i dont know how you would miss such a thing, since then it was constantly searching so im guessing it shorted out a diode or so.

The phone was given to me about 1,5 months after the incident, i opened it and took out the motherboard, i put it in IPA 99,9% to clean it, no visible corrosion.

I tried to upgrade the phone and its now stuck on recovery ofcourse.

C126_RF, U1001_RF, U18_RF, U17_RF are on the board and they look clean but the problem is that i dont know how you guys check the voltages on the diodes because theyre so small, how do you check if theyre working i cant find info about that, kindly tell me how.

Ive seen solutions where you jumper the connections, that i can do but i dont want to remove a diode that may work thats why i really wanted to check Along with you guys/gals first.

I guess that you only want to reball a chip when it has moved due to very hich tempratures or if you drop the phone, in theory i shouldnt be wanting to reball any chip due to the fact that only clean water was in contact Along with the board.

Any tips for me?

Thanks for your patience!!!

No Comment so far:

  1. julianz says:

    kindly guys, I dont want to rush this and remove and jumper wrong places, there is so many threads and its easy to get lost in these threads kindly to be helped me!

  2. newComer says:

    hi, you must to check battery connector; then see if you have a short on board.

  3. ExpertBuddy says:

    Hi, I tested a fresh battery on the iPhone but it didnt to be helped so there is a short on the board I think.

    Where on the board and how can I look for a short?

    Thanks!

  4. newComer says:

    ~..~..~ Bump ~..~..~