iPhone 5s not charging

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iPhone 5s

苹果 iPhone 5s 于2013年9月10日公布。该设备的维修与以前的型号相似，需要螺丝刀和撬棒。可使用GSM或CDMA / 16、32或64 GB。颜色有银色、金色和太空灰。

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Hernando Berg @hernandoberg

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发帖于: 2017年5月17日

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iPhone 5s not charging

I got in a Iphone 5s that's not charging. The charging symbols pops up when i plug in the cable but then it doesn't even show its charging. It just notices when i plug it in. I replaced the battery and charging dock already and still the same result. Anyone have an idea what could be the problem?

Is there a way how i can be sure it's the U2 charging chip? And how easy is it to replace for someone with a little bit of microsoldering expirience?

I removed the chip and tried to clean it good. I attached a few pics, what do you think? I welcome all feedback because i'm still very new to this. Waiting on the parts to arrive to solder on the new chip.

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Minho @refectio

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I think you need to define what "a little bit of micro-soldering experience" is. Attempting to replace a micro-BGA for the first time on a device that you wish to repair is a recipe for disaster. If you have some old, dead boards, you could practice on those first. If you apply too much heat, you can damage surrounding parts.

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I've done lots of soldering larger parts, but the smallest succesful microsoldering i've done is soldering the charging port on a galaxy grand prime. I have one board which i could use for practice. How much heat does it take to take it off? I can adjust the heat for my heat gun so i wouldn't want it to high.

由 Hernando Berg 完成的 2017年5月17日

There's a huge difference between a USB charging port and a micro-BGA chip. Plus, using a heat gun is like watering your flowers with a firefighters hose; I don't recommend it at all.

To do this properly, you need a hot air station with temperature & flowrate control. Look at this video (https://www.youtube.com/watch?v=n03D7a8u...). Keep in mind, Jason is highly experienced and makes it look much easier that it is.

由 Minho 完成的 2017年5月17日

Sorry, i didn't explain correctly, i have a Xtronic hot air station which i refered to as my heat gun. My mistake. I agree, with a normal heat gun it is like watering flowers with a firefighters hose. Thanks for the info.

由 Hernando Berg 完成的 2017年5月17日

No worries, you'd be surprised at how often folks think they can micro-solder with heat guns because they a saw a video on Youtube. Depending on how precise (or not) your station is, set it to ~370C with a flow rate that won't blow everything off the board. Better to start low and then increase. Also, use a nozzle of ~6mm. Practice on a dead board first.

由 Minho 完成的 2017年5月17日

Alright thank you, i will give it a try, were would you recomend buying the chip, ebay?

由 Hernando Berg 完成的 2017年5月17日

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I've done lots of soldering larger parts, but the smallest succesful microsoldering i've done is soldering the charging port on a galaxy grand prime. I have one board which i could use for practice. How much heat does it take to take it off? I can adjust the heat for my heat gun so i wouldn't want it to high. — Hernando Berg
There's a huge difference between a USB charging port and a micro-BGA chip. Plus, using a heat gun is like watering your flowers with a firefighters hose; I don't recommend it at all.

To do this properly, you need a hot air station with temperature & flowrate control. Look at this video (https://www.youtube.com/watch?v=n03D7a8u...). Keep in mind, Jason is highly experienced and makes it look much easier that it is. — Minho
Sorry, i didn't explain correctly, i have a Xtronic hot air station which i refered to as my heat gun. My mistake. I agree, with a normal heat gun it is like watering flowers with a firefighters hose. Thanks for the info. — Hernando Berg
No worries, you'd be surprised at how often folks think they can micro-solder with heat guns because they a saw a video on Youtube. Depending on how precise (or not) your station is, set it to ~370C with a flow rate that won't blow everything off the board. Better to start low and then increase. Also, use a nozzle of ~6mm. Practice on a dead board first. — Minho
Alright thank you, i will give it a try, were would you recomend buying the chip, ebay? — Hernando Berg