My iPhone 3G is dead after I opened the case
Two months ago, my iPhone 3G dropped into the water for 1 second. I dried it, I opened it (many times, so I've experience in opening and disassembling it) and cleaned it. Some strips on the display flex were damaged so I repaired them and the iPhone was alive again.
I used it normally for a month and a half and the last week I decided to replace the repaired flex with a new one. I bought the part, I opened the iPhone again, I replaced the flex (which is located in the display half), I closed it again and the iPhone never started.
Now it is completely dead. No display, no sounds, it is also not recognized by my PC as an USB device. I measured the battery voltage and it is 3.8V so it should start.
Any ideas of how to troubleshoot it?
Thank you very much
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