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 02-19-2011, 11:46   #1 (permalink)
Freak Poster
 
Join Date: May 2005
Location: Brunei
Posts: 109
Member: 145396
Status: Offline
Thanks Meter: 218
iPhone 3gs Power I.C. replacement (Process How To...)


Case:

iPhone 3gs fast drained batt and getting hot if it charge...


Cause:

Mainboard shorted


Solution:

Change Power Management IC...

Here's the way how to replace IC:

Preparing for reballing leads... I'm using heat resistant tape way of resoldering...


Mounting on solder plate...



Put solder paste (lead)...


Make sure lead paste must evenly distributed to holes...


Apply low heat and lead gradually melting...



After reballs from plate must reheat IC for even and fine lead settling...



Mounting to MB, heat must controled to prevent IC/MB spoiled...


Here's new IC mounted perfectly and beside is the shorted IC...


After assemble and plug in charge... It works but still lowbatt... (noticed at photo only 5 percent batt charged and the DATE when phone was dead)


Here's after how many minutes charge is 50 percent and for documentation compare IMEI on phone and the written IMEI on reciept and the problem written...

My first success change power IC is link HERE last year...

And somebody copied HERE...


BR
  Reply With Quote
The Following 12 Users Say Thank You to maui_1856 For This Useful Post:
Show/Hide list of the thanked
Old 02-19-2011, 11:53   #2 (permalink)
Freak Poster
 
it-repair's Avatar
 
Join Date: Nov 2010
Location: Earth and around
Posts: 324
Member: 1442842
Status: Offline
Thanks Meter: 103
Good Work!

good work!

tell me. If you use only new pmic or used one. I have always problems to remove the old glue on the chip for new reballing. Can you tell me please?

BR
  Reply With Quote
The Following User Says Thank You to it-repair For This Useful Post:
Old 02-19-2011, 11:59   #3 (permalink)
Freak Poster
 
Join Date: May 2005
Location: Brunei
Posts: 109
Member: 145396
Status: Offline
Thanks Meter: 218
Quote:
Originally Posted by it-repair View Post
good work!

tell me. If you use only new pmic or used one. I have always problems to remove the old glue on the chip for new reballing. Can you tell me please?

BR
Actually the 2 photos i remove showing the new ic, but since only 10 photos allowed i remove it...

HERE:

Remove PM IC from MB, take extra care IC is sealed and adjust low heat settings...



Replace it with new PM IC... New IC has no lead yet, it's color gold...

That's the 1st and 2nd steps...


BR
  Reply With Quote
Old 02-19-2011, 12:14   #4 (permalink)
Freak Poster
 
it-repair's Avatar
 
Join Date: Nov 2010
Location: Earth and around
Posts: 324
Member: 1442842
Status: Offline
Thanks Meter: 103
Quote:
Originally Posted by maui_1856 View Post
Actually the 2 photos i remove showing the new ic, but since only 10 photos allowed i remove it...

HERE:

Remove PM IC from MB, take extra care IC is sealed and adjust low heat settings...



Replace it with new PM IC... New IC has no lead yet, it's color gold...

That's the 1st and 2nd steps...


BR
Ok, you use new IC, thats i want to know.. thanks.

But i have only used PMIC here, and there ist the old black glue around these IC contacts. How to remove this glue, without destroy the PMIC?
  Reply With Quote
The Following User Says Thank You to it-repair For This Useful Post:
Old 02-19-2011, 12:25   #5 (permalink)
Freak Poster
 
Join Date: May 2005
Location: Brunei
Posts: 109
Member: 145396
Status: Offline
Thanks Meter: 218
Quote:
Originally Posted by it-repair View Post
Ok, you use new IC, thats i want to know.. thanks.

But i have only used PMIC here, and there ist the old black glue around these IC contacts. How to remove this glue, without destroy the PMIC?
You need to introduce mild heat to remove it... just mount in a plate that ic wont move while you heated it and scratch with flat tools or what your convenient tools to used..

I saw your video regarding removal of ic using infrared too... i've used it too but my eyes have problem seeing bright light...



BR
  Reply With Quote
Old 02-20-2011, 20:40   #6 (permalink)
Insane Poster
 
Join Date: Jul 2009
Posts: 86
Member: 1086977
Status: Offline
Thanks Meter: 50
Where can the replacement PM ICs be purchased, and how much?

My 3GS had failed battery. After replacement, the new battery drains very quickly. When put on charge, it shows charging symbol, but battery doesn't charge at all. Sometimes when using USB lead or mains charger, the symbol goes straight to the plug symbol, meaning fully charged, even though battery is totally dead and cannot charge it.
  Reply With Quote
Old 02-20-2011, 20:57   #7 (permalink)
No Life Poster
 
Bomber's Avatar
 
Join Date: Jul 2000
Location: hiroshima
Age: 46
Posts: 878
Member: 1756
Status: Offline
Thanks Meter: 9
yes, where the hell these damn power ic's are sold
can't find a place to purchase
  Reply With Quote
Old 02-21-2011, 04:31   #8 (permalink)
Freak Poster
 
Join Date: May 2005
Location: Brunei
Posts: 109
Member: 145396
Status: Offline
Thanks Meter: 218
I'm trying to reach our supplier but no answer yet anyway i try again and PM me those are interested so that we can order 1 time... we got our stuff from china...


BR
  Reply With Quote
Old 02-21-2011, 04:39   #9 (permalink)
Freak Poster
 
vlmobiles's Avatar
 
Join Date: Aug 2007
Posts: 428
Member: 560942
Status: Offline
Thanks Meter: 74
Very good work brother

its use for all

THANKS
  Reply With Quote
Old 02-22-2011, 10:41   #10 (permalink)
No Life Poster
 
yobb's Avatar
 
Join Date: Aug 2006
Posts: 1,115
Member: 337450
Status: Offline
Thanks Meter: 718
Quote:
Originally Posted by Bomber View Post
yes, where the hell these damn power ic's are sold
can't find a place to purchase
Surf in this site Manufacturers, Suppliers, Exporters & Importers from the world's largest online B2B marketplace-Alibaba.com and look for a trusted supplier.. Check its feedback..
  Reply With Quote
The Following User Says Thank You to yobb For This Useful Post:
Old 02-22-2011, 10:56   #11 (permalink)
No Life Poster
 
yobb's Avatar
 
Join Date: Aug 2006
Posts: 1,115
Member: 337450
Status: Offline
Thanks Meter: 718
Or directly HERE. Post feedback if you anyone have transactions.

Risk: 3 out of 10 is good
  Reply With Quote
The Following User Says Thank You to yobb For This Useful Post:
Old 02-23-2011, 23:05   #12 (permalink)
Insane Poster
 
Join Date: Jul 2009
Posts: 86
Member: 1086977
Status: Offline
Thanks Meter: 50
These ICs are very expensive, especially since they are only power management ones. I wonder why they cost so much. Usually China is very cheap for spares, as long as you can get them to send by airmail instead of highly expensive UPS couriers.
  Reply With Quote
Old 02-24-2011, 07:33   #13 (permalink)
Junior Member
 
Join Date: Nov 2010
Posts: 6
Member: 1435402
Status: Offline
Thanks Meter: 0
i can see on photos that a hotair station is used to unsolder the old IC,
can you pls detail how the new IC is soldered? is it with hotair station? how is the IC compressed on the board when soldering?
Please give some details on the crucial step

Thank you for this very nice tutorial.
  Reply With Quote
Old 02-25-2011, 09:32   #14 (permalink)
Junior Member
 
Join Date: Nov 2010
Posts: 6
Member: 1435402
Status: Offline
Thanks Meter: 0
Is it possible to replace 338S0533 pmic with 338S0768-AE pmic?
  Reply With Quote
Old 03-03-2011, 18:46   #15 (permalink)
Freak Poster
 
Join Date: Sep 2002
Location: K S A
Age: 37
Posts: 257
Member: 15539
Status: Offline
Thanks Meter: 100
power ic

PMIC 338S0768-AE or PMIC 338S0533-AE.
is this both ics are same?
  Reply With Quote
The Following User Says Thank You to rifziyad For This Useful Post:
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
news headlines to gsm phone mos Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 7 05-22-2016 11:42
How can I do a Welcome note for my 6110 a dosn't have any one ? Viper Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 8 06-27-2015 11:57
6110 power does not stay on sc~micro Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 6 08-30-2014 08:14
How to add a language in 51xx/61xx tati Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 8 05-21-2013 19:20
How to upload a new firmware... Brand Nokia Legacy Phones ( DCT-1 ,2 ,3 ,L ) 8 06-08-2012 18:29

 



All times are GMT +1. The time now is 07:03.



Powered by Searchlight © 2019 Axivo Inc.
vBulletin Optimisation provided by vB Optimise (Pro) - vBulletin Mods & Addons Copyright © 2019 DragonByte Technologies Ltd.
- GSM Hosting Ltd. - 1999-2017 -
Page generated in 0.44815 seconds with 8 queries

SEO by vBSEO