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Old 07-09-2012, 22:58   #1 (permalink)
G1mobile repair
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Join Date: Nov 2011
Location: County Durham, UK
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iPhone 3gs another white screen problem

I was given an iPhone 3gs to replace the wifi antenna and the signal antenna connectors, as always removing the motherboard to sit under the microscope.

On work completed, put board back into iphone, powered on but nothing on screen, plugged into charger and the iphone bleeped as if it were working. I pressed the on off button and the screen showed white, if I switch off and back on again, same again, blank screen then screen shows white. I looked at the reverse of the board and inductor was missing 66.6 ohm one, I have replaced this with another one from another 3gs but it is still the same. The top solder pad of the inductor was missing but this looks as if its a direct connection to the inductor to the right of it so I linked them together, where does this 66.6 ohn inductor pin out to?

What have I done wrong?
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