GSM Shop GSM Shop
GSM-Forum  

Welcome to the GSM-Forum forums.

You are currently viewing our boards as a guest which gives you limited access to view most discussions and access our other features.
Only registered members may post questions, contact other members or search our database of over 8 million posts.

Registration is fast, simple and absolutely free so please - Click to REGISTER!

If you have any problems with the registration process or your account login, please contact contact us .

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.

Reply
 
LinkBack Thread Tools Display Modes
Old 07-10-2012, 17:53   #1 (permalink)
No Life Poster
 
Join Date: Jan 2011
Location: Honduras
Posts: 695
Member: 1488173
Status: Offline
Thanks Meter: 194
Donate money to this user
Unhappy Iphone 4 No imei


Hello friends, i need help to solve this issue, i know here exists many people with good potential to repair this phones (Mr. Wites, etc...etc), i am having problems with an iphone 4, when i try to restore itunes give me error (-1) and after replace battery the same problem.

I think there is a problem with voltage that needs the baseband ic, maybe somebody can tell me where to start.

thanks !!
  Reply With Quote
Old 07-10-2012, 18:12   #2 (permalink)
No Life Poster
 
Join Date: Jan 2011
Location: Honduras
Posts: 695
Member: 1488173
Status: Offline
Thanks Meter: 194
Donate money to this user
i donīt know if wifi is dead too because the iphone is not activated, after restore with custom and ireb, the phone turn on but is needed the activation and the phone does not recognize any sim card.
  Reply With Quote
Old 07-10-2012, 18:56   #3 (permalink)
No Life Poster
 
roro_manool's Avatar
 
Join Date: Oct 2005
Location: Sweden
Posts: 621
Member: 192974
Status: Offline
Sonork: 100.1627605
Thanks Meter: 495
Quote:
Originally Posted by celumaster. View Post
i donīt know if wifi is dead too because the iphone is not activated, after restore with custom and ireb, the phone turn on but is needed the activation and the phone does not recognize any sim card.
try to update the phone normally by itunes untill you get error 1 then after that make a custom ios 5.1.1 by redsn0w without baseband update after that if your phone have a software fault it will be repair , if not working then it is hardware you need to change or reball baseband ic
  Reply With Quote
Old 07-10-2012, 19:08   #4 (permalink)
No Life Poster
 
dog68's Avatar
 
Join Date: Mar 2012
Location: cambridgeshire, England
Age: 55
Posts: 760
Member: 1728699
Status: Offline
Thanks Meter: 212
Donate money to this user
Check baseband volts, hope this helps a bit.
Attached Images
File Type: png 4bb.PNG (129.8 KB, 1767 views)
  Reply With Quote
Old 07-10-2012, 19:47   #5 (permalink)
No Life Poster
 
Join Date: Jan 2011
Location: Honduras
Posts: 695
Member: 1488173
Status: Offline
Thanks Meter: 194
Donate money to this user
thanks !!

Quote:
Originally Posted by roro_manool View Post
try to update the phone normally by itunes untill you get error 1 then after that make a custom ios 5.1.1 by redsn0w without baseband update after that if your phone have a software fault it will be repair , if not working then it is hardware you need to change or reball baseband ic
Already did that and the phone turn on but no imei
  Reply With Quote
Old 07-10-2012, 19:50   #6 (permalink)
No Life Poster
 
Join Date: Jan 2011
Location: Honduras
Posts: 695
Member: 1488173
Status: Offline
Thanks Meter: 194
Donate money to this user
thanks !!

Quote:
Originally Posted by dog68 View Post
Check baseband volts, hope this helps a bit.
Hello, thanks for sharing picture but, what voltage values exists in that points?
  Reply With Quote
Old 08-25-2012, 07:05   #7 (permalink)
Banned
 
Join Date: Nov 2010
Posts: 156
Member: 1439005
Status: Offline
Sonork: alexz702
Thanks Meter: 11
i don't have voltage in one of the l8 l6 l3 but i do get on the rest
  Reply With Quote
Old 08-25-2012, 11:37   #8 (permalink)
Insane Poster
 
Join Date: Jun 2012
Posts: 92
Member: 1770097
Status: Offline
Thanks Meter: 17
L6 and L8 connects to battery so you should get battery voltage on both sides.
If only on 1 side, replace it.
Ohm out the coil and make sure they beep.
  Reply With Quote
Old 08-25-2012, 15:00   #9 (permalink)
Junior Member
 
Join Date: Nov 2009
Posts: 34
Member: 1159444
Status: Offline
Thanks Meter: 7
i got bit different Problem on iPhone 4.

Restore with iTunes works fine, no Error, than Phone boot up to activation Screen and
Shows "searching" without Sim Card.
Wifi, BT, Modem Firmware are okay, bit time before it works normaly after restore and
i couldt activate it in usual way, Network came and after view Minutes Network gone.

At that point i looked up into general Info an everything seems to be okay, but
if i type *#06# in Phone there is nothing. (nothing happend, no popup window)

At the moment Phone stay in activation Mode without Imei. But in General Info
there everything present. (i activate by jailbreak) Cant activate with iTunes, itunes
say there is noch simcard installed.

Anyone got any idea?

I search on pcb for broken lines by microscope but i couldnt find anything, pcb are
in very good optical condition.
  Reply With Quote
Old 08-25-2012, 15:21   #10 (permalink)
No Life Poster
 
dog68's Avatar
 
Join Date: Mar 2012
Location: cambridgeshire, England
Age: 55
Posts: 760
Member: 1728699
Status: Offline
Thanks Meter: 212
Donate money to this user
No one says how the problems started? ?
  Reply With Quote
Old 08-25-2012, 15:26   #11 (permalink)
Junior Member
 
Join Date: Nov 2009
Posts: 34
Member: 1159444
Status: Offline
Thanks Meter: 7
my Problem started with fallin on the floor, sorry.

On L3 i have on both sides 1,35 volts on L2 i have on both sides 1,83 volts.

Volts on FL6 nd FL8 have 4,22 volts on every point.
  Reply With Quote
Old 08-26-2012, 03:26   #12 (permalink)
Cheater -Don't Deal with him-
 
Join Date: Aug 2012
Location: India
Posts: 54
Member: 1797470
Status: Offline
Thanks Meter: 1
its baseband problem
  Reply With Quote
Old 08-26-2012, 05:38   #13 (permalink)
Insane Poster
 
Join Date: Jun 2012
Posts: 92
Member: 1770097
Status: Offline
Thanks Meter: 17
Quote:
Originally Posted by Andy-1977 View Post
my Problem started with fallin on the floor, sorry.

On L3 i have on both sides 1,35 volts on L2 i have on both sides 1,83 volts.

Volts on FL6 nd FL8 have 4,22 volts on every point.
Time to reball the chip. I think you cracked the solder joints under the chip.
  Reply With Quote
Old 08-26-2012, 07:06   #14 (permalink)
Junior Member
 
Join Date: Nov 2009
Posts: 34
Member: 1159444
Status: Offline
Thanks Meter: 7
Thx for this help too.

In Facts this ist other Phone, then taht in the other thread.
This Phone here i will wait, because it is not mine, at the other i will try to reball Chip.

Thx
  Reply With Quote
Old 08-26-2012, 09:00   #15 (permalink)
Insane Poster
 
Join Date: Jun 2012
Posts: 92
Member: 1770097
Status: Offline
Thanks Meter: 17
Look under microscope to see if the glue around chip is cracked anywhere.
If you find cracks, most likely solder cracked too and will need reballing.
  Reply With Quote
Reply

Bookmarks

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are On
Pingbacks are On
Refbacks are On


Similar Threads
thread Thread Starter Forum Replies Last Post
what prog changes imei on 6110 and how do i do it? Ravetrancer Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 3 07-31-2012 20:09
Service Provider Lock 1-4 ? StompSC Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 2 06-27-2012 11:00
Nokia 51xx/61xx imei changer ver. 1.10?????? Ravetrancer Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 8 04-06-2012 16:22
6110 imei changer !!!!!! Ravetrancer Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 5 11-21-2011 01:44
I CAN UNLOCK 1,2,3,4 FOR ANY PHONE Ģ40 (1+) -- Ģ30 (20+) andrew bennett Main Sales Section 1 07-26-1999 19:33

 



All times are GMT +1. The time now is 04:57.



Powered by Searchlight © 2024 Axivo Inc.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2024 DragonByte Technologies Ltd.
- GSM Hosting Ltd. - 1999-2023 -
Page generated in 0.31678 seconds with 10 queries

SEO by vBSEO