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Vierte iPhone Generation. Die Reparatur an sich ist unkompliziert, aber Frontglas und LCD müssen gemeinsam ersetzt werden. GSM mit 8, 16 oder 32 GB Kapazität, Modell A1332 in schwarz und weiß.

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Getting hot when battery is connected

My wife dropped her phone in water, quickly retrieved it and powered it down. I took the phone apart and let it sit for 3 days to dry.

Now when I put it back together, it will turn on, but gets very hot in the lower right side (same side as sim card).

I tried 2 other batteries, but had the same issue. Phone turns on, works fine, gets really hot after 1-2 minutes and shuts down (I assume because of overheating).

I disconnected everything from the logic board and only plugged in the battery, and the logic board still gets hot. Seems to be starting in the covered L-shaped area next to the battery connector (area with the Texas Instruments 343S0499 Touch Screen Controller & 36MY1EE NOR and mobile DDR).

Does this mean that she needs a new logic board, or is there anything else I should try?

Beantwortet! View the answer Ich habe das gleiche Problem

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1 Antwort

Gewählte Lösung

start by taking the phone apart again, and taking off the shields on the logic board. dip the whole thing in some 90%+ isopropanol and soak for a few hours and then clean with a toothbrush and more alcohol.

The heat is coming from a short on the logic board.

Your troubleshooting looks like this:

1.) Clean the board and dry--test. if not solved

2.) Apply flux and attempt to reflow the oxidized solder on components in the area that is getting hot---this is a risky DIY fix, and it may be worth it to send out for this service

3.) If still not solved, you need a board-level repair to find and replace the shorted component---this can be quite time consuming so it may not be worth it for an iPhone 4.

You did a lot of things right with this water damage repair---next time do an alcohol clean before starting the phone...the alcohol displaces the water and remove any trace minerals that would otherwise dry on the phone.


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Eric wird auf ewig dankbar sein.
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