Rep: 1
1
I dropped my 3gs in water, and now have intermittent 3g and cell reception. I want to get a new dock assembly to repair, but wanted to make sure my board was not fried since there is some discoloration on the back side of the circuit board where the #4 connector attaches.
What can I do to check if the circuit board is still good?
Is this a good question?
Rep: 26.3k
152
71
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DO NOT RESTORE. GET THIS DISASSEMBLED AND THE BATTERY REMOVED. If there are shorts caused by the residue electricity may kill the component. The logicboard/motherboard needs properly cleaned prior to moving further. Disassemble your phone. The gist of the procedures are here. Clean your printed circuit boards with rubbing alcohol and and a brush ( I would suggest using pharmaceutical grade rubbing alcohol, 95% or better which you can get at many drug store, to clean the motherboard. Then submerge and agitate (move them around) them in alcohol to ensure that the ICs (Integrated Circuits)with BGAs (Ball Grid Arrays) have been flushed of contaminates. Wipe them with paper towels, changing them often, to ensure you are not smearing residues or contaminates to other places. Use a hair dryer ( on low to no heat) or a fan to expedite the drying process. With the use of the fore mentioned continue to let them sit over night to dry. Let them sit at least 24 hours with out the aide of air flow. Reassemble and give it a try. Your new dock assembly is available here. Good soldering skills will be needed to install it.
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+ Excellent Answer!
good call. Not sure what I was thinking on that one.
+ but no soldering needed on a 3gs
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