dc voltage - GSM-Forum

JBC2005 · 12-22-2010, 18:31

I am currently bench-testing a logic board from an iPhone 3G. Is there any way to connect a dc power adapter directly to the logic board to test components (essentially bypassing the battery)?

switch998 · 12-22-2010, 21:22

You need 3.7V on the battery contacts. Pin 1 is GND, pin 4 is +3.7V (try the reverse if that doesn't work). You can use +5VDC from USB without a problem, if you need to connect the voltage to the top of the board solder the DC wire onto the battery fuse.

12-22-2010, 18:31	#1 (permalink)
JBC2005 Junior Member Join Date: Dec 2010 Posts: 2 Member: 1472166 Status: Offline Thanks Meter: 0	dc voltage I am currently bench-testing a logic board from an iPhone 3G. Is there any way to connect a dc power adapter directly to the logic board to test components (essentially bypassing the battery)?

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12-22-2010, 21:22	#2 (permalink)
switch998 Insane Poster Join Date: Jun 2008 Posts: 76 Member: 785337 Status: Offline Thanks Meter: 22	You need 3.7V on the battery contacts. Pin 1 is GND, pin 4 is +3.7V (try the reverse if that doesn't work). You can use +5VDC from USB without a problem, if you need to connect the voltage to the top of the board solder the DC wire onto the battery fuse.