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Go Back   GSM-Forum > GSM & CDMA Phones / Tablets Software & Hardware Area > iPhone ,iPod & iPad (Apple Inc. Products) > iPhone, iPad, iPod Hardware Repair

iPhone, iPad, iPod Hardware Repair Hardware Repair discussions for iPhone, iPod , iPad & Apple Products, help, guides.

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Old 06-11-2011, 10:41   #76 (permalink)
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Quote:
Originally Posted by zhanglei5556 View Post
1:first pls check the battery vcc to all place.i think battery have broken line.
2:check 1.8V 2.8V 3.4V 4V If have found.pls reflash the 36MY1EE .K5D2829 or S72NS128
3:sorry sir,i don't know what is digitailzer.
4:checn the pic for iphone 3G sim card.
3.- Q: i mean digitalizer to touch screen ,

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
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Old 06-11-2011, 10:59   #77 (permalink)
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Quote:
Originally Posted by fromdesert View Post
Hi mr zhang
My 3g is alway in recovery mode, i cant restore my iphone cause of error 28, i changed usb connector, full battery still the same.
Thanks
hello friend.pls check the pic for repair your problem.
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File Type: jpg error 28.jpg (75.3 KB, 438 views)
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Old 06-11-2011, 13:53   #78 (permalink)
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Quote:
Originally Posted by Wideon2000 View Post
3g 16gig

error 23 on restore

other files error 1600


dfu and non dfu will not restore
change battery mebi your phone ok thanks
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Old 06-11-2011, 17:49   #79 (permalink)
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Quote:
Originally Posted by zhanglei5556 View Post
hello friend.pls check the pic for repair your problem.
3gs always noservice & got service when switching 3g on.But if off 3g,the phone working fine.Any solution pls ?????????????????
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Old 06-11-2011, 17:55   #80 (permalink)
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Quote:
Originally Posted by zhanglei5556 View Post
hello friend.pls check the pic for repair your problem.
iPhone 4 can't power on,But the power IC get hot can not touch,even power IC have been changed,But problem still the same.Any solution master ??????????
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Old 06-11-2011, 18:25   #81 (permalink)
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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
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Old 06-12-2011, 03:45   #82 (permalink)
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Quote:
Originally Posted by chandy pok View Post
iPhone 4 can't power on,But the power IC get hot can not touch,even power IC have been changed,But problem still the same.Any solution master ??????????
pls check the phone PA.good luck.
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Old 06-13-2011, 13:04   #83 (permalink)
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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
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Old 06-13-2011, 22:27   #84 (permalink)
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no backligth

HI bro
my iphone 3gs no backligth
i change coil 6r8 = nothing
i change ic 109 = same probleme
an idea ??????.
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Old 06-14-2011, 04:01   #85 (permalink)
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Quote:
Originally Posted by YOUSSEF1975 View Post
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

yes sir.maybe the phone PMIC need change.good luck.
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Old 06-14-2011, 04:12   #86 (permalink)
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Quote:
Originally Posted by flux1 View Post
HI bro
my iphone 3gs no backligth
i change coil 6r8 = nothing
i change ic 109 = same probleme
an idea ??????.

first pls change L6_AP or L11_AP if not yet.pls change PMIC.the phone will be ok.
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Old 06-14-2011, 04:35   #87 (permalink)
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Quote:
Originally Posted by zhanglei5556 View Post
first pls change L6_AP or L11_AP if not yet.pls change PMIC.the phone will be ok.
check the pic for 3GS backlight.
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File Type: jpg 3GS backlight.jpg (122.1 KB, 459 views)
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Old 06-14-2011, 15:46   #88 (permalink)
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Quote:
Originally Posted by zhanglei5556 View Post
check the pic for 3GS backlight.

Can u Pls Guide me about 4g with pic...
No wifi, no bluetooth, no modem firmware.......
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Old 06-14-2011, 16:51   #89 (permalink)
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I have iphone 3g not charging and cannot detected usb but phone can turn on
everbody can help me .Thk
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Old 06-14-2011, 18:39   #90 (permalink)
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Mr Zhang Please HElp Me ... post #69 ..

Tanks
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