iPhone 4 dead ( but not with usb ) - GSM-Forum

Henrik Liss · 03-02-2011, 13:12

Hi all,

I have one iPhone 4 there is dead.

But if I connect it to computer it turns on.

Now what I found out, is that battery PIN ( on logic board ) where we normally have 3.7 volt from battery, is shorted to ground ( 1 ohm )

Hope someone can help here... and give a hint what component is faulty

Best regards
HL

vertex777 · 03-04-2011, 11:30

I think this kind of problem for battery .....

u can chk battery

Henrik Liss · 03-05-2011, 09:54

Hi,

I have tryed with another working battery.

There is 1 ohm between PIN 3,7 volt and ground, without
battery in phone...

br
HL

andhufazil · 04-16-2011, 18:58

yeah me 2 having same problem any help???
btw is ur i4 water damaged .. mine is water damaged...

dragosgsm · 04-16-2011, 19:09

check all capacitors it must be one grouded on bouth sides

ricnpr · 08-21-2012, 02:39

Quote:

Originally Posted by Henrik Liss

Hi all,

I have one iPhone 4 there is dead.

But if I connect it to computer it turns on.

Now what I found out, is that battery PIN ( on logic board ) where we normally have 3.7 volt from battery, is shorted to ground ( 1 ohm )

Hope someone can help here... and give a hint what component is faulty

Best regards
HL

Did you even find out what was the problem with the iPhone 4? i have the same issue. When I check for continuity from + on the battery connector and any metal on the logic board I get a short. I check the battery and is OK. Also, all contacts on the battery port and capacitor looks fine. No sign of any broken solder.

anyone?

thanks in advance!!

03-02-2011, 13:12	#1 (permalink)
Henrik Liss Freak Poster Join Date: Jan 2004 Age: 48 Posts: 123 Member: 51434 Status: Offline Thanks: 28 Thanked 10 Times in 8 Posts	iPhone 4 dead ( but not with usb ) Hi all, I have one iPhone 4 there is dead. But if I connect it to computer it turns on. Now what I found out, is that battery PIN ( on logic board ) where we normally have 3.7 volt from battery, is shorted to ground ( 1 ohm ) Hope someone can help here... and give a hint what component is faulty Best regards HL

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03-04-2011, 11:30	#2 (permalink)
vertex777 No Life Poster Join Date: Apr 2008 Posts: 538 Member: 746552 Status: Offline Sonork: 100.1594844 Thanks: 298 Thanked 88 Times in 58 Posts	I think this kind of problem for battery ..... u can chk battery

03-05-2011, 09:54	#3 (permalink)
Henrik Liss Freak Poster Join Date: Jan 2004 Age: 48 Posts: 123 Member: 51434 Status: Offline Thanks: 28 Thanked 10 Times in 8 Posts	Hi, I have tryed with another working battery. There is 1 ohm between PIN 3,7 volt and ground, without battery in phone... br HL

04-16-2011, 18:58	#4 (permalink)
andhufazil Junior Member Join Date: Dec 2006 Posts: 4 Member: 411253 Status: Offline Thanks: 19 Thanked 0 Times in 0 Posts	yeah me 2 having same problem any help??? btw is ur i4 water damaged .. mine is water damaged...

04-16-2011, 19:09	#5 (permalink)
dragosgsm No Life Poster Join Date: May 2005 Location: Bacau Posts: 2,234 Member: 148032 Status: Offline Thanks: 121 Thanked 259 Times in 208 Posts	check all capacitors it must be one grouded on bouth sides