Hi, after some hours in heavy rain my water proof pocket was filled with 4cm of rain and my phone started swimming. Unfortunately my reflexes turned the phone on and I saw the screen flashing up normally up to some point when it went off again. Back home I opened the device and dried everything. I saw some corrosion next to one chip (I think it was the ST Microelectronics STM32F411CE 32-bit 100 MHz ARM Cortex-M4 RISC microcontroller) and the sim card holder. I cleaned that with a soft toothbrush and after one day assembled the phone and added usb power and turned it on - no charging light went on, no vibration was happening, the screen stayed black.
So I went to buy some Isopropylalcohol and covered all disassebled parts of the phone in it, cleaned it, let it dry, assembled it and tried again. Same no-response.
I repeated this procedure 3 times by now and even tried it with a new battery. Still no success.
No I wonder what my options are:
1) trying to repair the phone somehow.
2) rescuing only the data from the emmc.
1: I already explained what I was trying. I also have a multimeter and probably am going to follow the trace of electric flow tomorrow, hopefully finding that one diode that is broken now.
What else can I do. Do you have any suggestions?
2: I have seen the amazing work of changing the emmc by using a heatgut. Nice hack to remove bga circuits. I just wonder: Do the data survice such a hot process?
Right now I tend to think about unsoldering the emmc and trying to find a reader for emmcs to read out my data (Easy JTAG or something). This is a fun way where I definitively will learn a lot because I have no experience in this field. I dont know the tools, their names, nor the caveats.
Any feedback appreciated.
Thanks,
codingdave
So I went to buy some Isopropylalcohol and covered all disassebled parts of the phone in it, cleaned it, let it dry, assembled it and tried again. Same no-response.
I repeated this procedure 3 times by now and even tried it with a new battery. Still no success.
No I wonder what my options are:
1) trying to repair the phone somehow.
2) rescuing only the data from the emmc.
1: I already explained what I was trying. I also have a multimeter and probably am going to follow the trace of electric flow tomorrow, hopefully finding that one diode that is broken now.
What else can I do. Do you have any suggestions?
2: I have seen the amazing work of changing the emmc by using a heatgut. Nice hack to remove bga circuits. I just wonder: Do the data survice such a hot process?
Right now I tend to think about unsoldering the emmc and trying to find a reader for emmcs to read out my data (Easy JTAG or something). This is a fun way where I definitively will learn a lot because I have no experience in this field. I dont know the tools, their names, nor the caveats.
Any feedback appreciated.
Thanks,
codingdave
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