Hi everyone, I accidentally dipped my phone in sea water for a couple of minutes and sure enough, the phone stopped working. I was on holiday, so did not manage to open it up to clean the phone. It was dried in the sun though. When I got back, I disassembled the phone, cleaned the main PCB with Isopropyl Alcohol and then with warm water (to dissolve any sea salt) and then left it to dry in a lab oven overnight at ~80 deg C. I then assembled the whole phone together and part of it started working again. It kept asking me for the default security code (12345) and always asked for the date and time everytime I took the battery out. I measured the voltage on the small backup battery (lower left on the PCB) and it is 1.3V, so I guess this is the cause. The things that are not working are :- 1) The SIM card is not recognised. When I turn on the phone, it says Start without a SIM card ? Accept or reject. I tried different SIMs (Vodafone and O2, working on other mobile phones) but it is not accepted. The only one that worked was a old VODAFONE (disconnected) SIM. 3) The LCD backlight and the PCB keypad LEDs are not working. I checked the PCB LEDs and they are not damaged. Not sure I can say the same about the LCD backlight. 4) The MicroSD card slot is not working. 5) The loudspeaker is not working (I think). The bits that are working are :- a) Camera (yippee !) b) Mic and earpiece (can do a voice recording and play it back) c) Vibrate function d) Side blue lights come on when you turn it on e) USB (I managed to back up everything now !) f) Charging (I think it works as there is an indicator when I plug in the charger) So I am almost there. If I can get pass the SIM issue, I can check if I can use it to make calls. Any help to repair this phone is very much appreciated. Thank you all in advance. lengchaidude
08-06-2009, 11:42
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