Water Damaged iPhone 6 Plus; Small component broke off
I'm working on a customer's iPhone 6 Plus. My first water damaged phone. I was able to remove the logic board shield where there was noticeable corrosion. I've isolated the problem to a small component. One side of the component was hanging off of the logic board and the other side was still soldered on.
My questions are this: how do I know what kind of component this is? Secondly, since there is no metal on one side of the component, is there any way that I can get this component back on the logic board? Third, would it be safe to micro jumper this connection on the logic board?
Appreciate any help that you can give me. I'm learning. Hopefully I did not bite off more than I can chew. I do have an electrical engineering degree, but no micro soldering experience.
Mike
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4 Комментариев
How did it go? I have similar issue with a short in the PP_VCC_MAIN line in a 6plus. The only thing heating is PMIC, have not tried to replece it yet. Would be my first chip rep.
из Ronny Andersson
Don't replace the PMIC. You'll be sorry if you did. Check the cap near the big wifi chip on the back for a short.
из Michael Huie
I agree. Better not to jump to conclusions that the big IC chip is at fault. Other components connected to it can cause it to be shorted instead without you realising that the IC chip may be not at fault.
из Ben
Thanks for reply! I have not change it yet. And i think I wont, on diodmode with multimeter I've got 22ohms around the PMIC and the WIFI cap, and near the Audio IC I've got don to 3ohms, if i put the probs togheter it reads 2ohms, so its defently near the U0900!
NOW! The thing i found weird, the PP_VCC_MAIN in to audio IC is defently NOT shorted?? The four caps incl C1075 shows no "beeb" and have high resistance to ground? Insteed I've got short in PP1V8_SDRAM, that line shows 12oms. The cap i belived cause the problem was c1025, that showed 3oms. But still i short!
So far I've removed C1033, C1014, C1025 and C1263, they all except C1025 looked bad. I have not replaced them.
So my next guess is the audio IC, cant find a bad cap nerby and i get low readings on nearby caps, you can allso see the burnmarka on the shield ahowing that two lines to the chip gone really hot! See: DEAD, no respons, No power to the battery, possible the U2 ic?
из Ronny Andersson