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06-11-2011, 10:41 | #76 (permalink) | |
No Life Poster Join Date: Jan 2005 Location: the earth Age: 41
Posts: 1,037
Member: 103024 Status: Offline Thanks Meter: 616 | Quote:
thanks a lot very usefull !! i will try & post results in other hand do you have some method to diagnostic by searching voltages etc ? can you give us a tip of a basics for diagnostic using your method i will apreciate a lot thanks in advance roger | |
06-11-2011, 18:25 | #81 (permalink) |
No Life Poster Join Date: Jan 2005 Location: root
Posts: 758
Member: 111871 Status: Offline Sonork: 100.78975 Thanks Meter: 100 | iīve got 6 iphones which I couldnīt solve them yet, maybe you can help... 1) iphone 3gs - everything seems fine on pcb, measured pmic tpīs, voltages are fine. restore error 21 always 2) iphone 4 - water damage, was restarting after few minutes, then imei/bt ad/wifi ad greyd out. pcb is all cleaned, it can restore normally 3) iphone 3gs - water damage, after repairing everything works, but wifi signal is too low, can only connect few inches from router. replaced wifi antena, resoldered marvell, checked antena connections, and no problem found, but signal still too low. 4) iphone 4 - canīt find any wifi network, not even with routerīs antena touching phone. water damage as well 5) iphone 2g - didnīt recognized usb/charger, replaced main ribbon, now it connects with pc and notices the charger connected, but no matter how long it charges, battery still low. replaced battery then, but still the same. 6) iphone 3gs - got here completly dead, and even with full battery, voltage between gnd and green fuse gets 0,30v , or 0,50v with connected charger. i replaced pmic and 2 coils, it got alive, but turns off after some hours. i can turn it on normally, it works fine, but some time later turns itself off again and again. tia br |
06-13-2011, 13:04 | #83 (permalink) |
Registered User Join Date: Oct 2006 Age: 48
Posts: 348
Member: 362673 Status: Offline Thanks Meter: 37 | Hello, I have a 3GS 32Go. I charged it with a china charger. My phone battery was completly empty. The charger explosed after one minute. Now my phone doesn't power on and not charging. When i put a good full battery, it's the same result (no chargning, no power on) but the phone get hot. I mesured the two fuse, its ok. I would like to keep my data in the phone. What is the solution ? Is it necessarly to change PM IC ? Thanks |
06-14-2011, 04:01 | #85 (permalink) | |
Freak Poster Join Date: Feb 2006 Location: china-NanJing Age: 41
Posts: 362
Member: 233259 Status: Offline Thanks Meter: 283 | Quote:
yes sir.maybe the phone PMIC need change.good luck. | |
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