Ipad 5 (2017 A1822) Need help identifying component

[Papa Gleb]

Hello all,

I have an ipad 5 that came in for home button repair. Issue fixed and return to the customer who then stated it also has battery/charge issues. The battery seemed fine however the ipad would acknowledge the charger every other time. The port looked fine but considering that it would work than not, I decided to change the port. Port changed and yet it draws zero amps. Removed the shield and found this burned component. Tried to find a board view but seems like the ipad 5 is the only ipad for which board views don't exist.

Yes I should have definitely done a visual inspection before anything but I am learning, the customer is my sister and this is an old ipad that they barely used so it's a good candidate to learn on.

If anyone has the board view or better yet help me identify this component that would be great. This burned component is causing a short on all the caps. Also if there is any advice or suggestions on what to check I am open to it all so please help me learn. Thank you all very much!!!

[reformatt]

Re: Ipad 5 (2017 A1822) Need help identifying component

Looks like a coil to me which got too hot (because of the short you mention). That's the PMIC so many rails coming off that. If you have a short on that line, it's either the PMIC itself, or one of the caps on that rail. Thermal camera would save you buckets of time on this one.

[R_J]

Re: Ipad 5 (2017 A1822) Need help identifying component

I agree it looks like a coil, if it did not go open it could be ok. It may have had a the value printed on top at one time.

[mon2]

Re: Ipad 5 (2017 A1822) Need help identifying component

L8429 = 2.2uh-1.05a-0.195ohm
vls201612e

[Papa Gleb]

Re: Ipad 5 (2017 A1822) Need help identifying component

Thank you guys so much for all of this useful info. Thermal cam is too expensive at least for now but I do have rosin I can use.

Question, I changed the charging port without any issues or torn pads but this being my first one could that possible cause any of this? Should I leave it or remove it and check?

Honestly thank you all. Learning this is so hard at least for me and my only source was YouTube which is always so easy to watch till I get to my bench and feel like I'm at zero. Truly thank you!!!

[Papa Gleb]

Re: Ipad 5 (2017 A1822) Need help identifying component

mon2, would you be able to send me the schematic you have for this iPad. Since my last post I have continued to search and still cant find anything specifically for the 5. I also figured out that its not the coil lol.

Update to follow shortly as I just won a donor board on ebay.

[Papa Gleb]

Re: Ipad 5 (2017 A1822) Need help identifying component

The short is gone without me doing anything. While I was looking for a schematic/board view, the short fixed itself. I connected everything back up and it's working just fine.

This is great but not a fix. I don't want to seal it back up to find it not working in a day or two. I waited a day and still not short. This iPad had the screen replaced a few times and home button but I don't believe nor see any evidence of anyone touching the board.

Any suggestions on what to do?