Iphone 5 U2 ic 3 Prints broken - GSM-Forum

qasimshah5 · 09-12-2014, 23:49

Hey guys i have a problem with my iphone 5 .... i bought it in non repaired condition its battery used to drain very fast and the mobile used to become very hot but used to show charging and used to charge the battery too...later when i opened it ..there was a coil attatched with the battery's terminal(not motherboard terminal) going directly to the charging jack...i showed it to the repair man..he said that u2 ic needs to be replaced so he tried to remove the u2 ic but he damaged 3 prints under it

now the phone doesnt charge now after changing serveral u2 IC but turns ON with charged battery.... is there any solution now ? plz guys i need your help i have searched the whole forum but couldnt find the damaged prints's solution...

qasimshah5 · 09-13-2014, 13:27

please guys help me ?? give me any solution?

mb83 · 09-13-2014, 22:53

which pads are broken? there is easy way to fix… if these pads are in center u2 you have gently do a little hole until you will see rest of ways… put some flux and little slder. that's it. If this pad is near to edge you have to do a jumper with some thin wire… i repair a lot of broken pads in u2 always success. Tell me which pads, maybe you don't have to reapir all of it.

qasimshah5 · 09-15-2014, 00:04

Quote:

Originally Posted by mb83

which pads are broken? there is easy way to fix… if these pads are in center u2 you have gently do a little hole until you will see rest of ways… put some flux and little slder. that's it. If this pad is near to edge you have to do a jumper with some thin wire… i repair a lot of broken pads in u2 always success. Tell me which pads, maybe you don't have to reapir all of it.

hey thanks for the reply i really appreciate it

well i dont have a microscope to take its picture but i can point out the points that i remember from a random pic i found on internet...here is the picture...i have circled those points and please kindly explain me the whole procedure on how to fix the broken pads so i can explain the technician

thanks alot i am waiting for ur answer

qasimshah5 · 09-15-2014, 00:35

CURRENTLY i am not able to upload any attachment due to an error and cannot ad any URL :/ so i will do it in the morning and let u know...and one more question.. according to my knowledge he didnt remove that BLACKISH RESIN on the board after removing OLD U2 IC because i think he dont know about that..so is it necessary to remove it ? if yes than please let me know how to do it

dog68 · 09-15-2014, 13:02

Quote:

Originally Posted by mb83

which pads are broken? there is easy way to fix… if these pads are in center u2 you have gently do a little hole until you will see rest of ways… put some flux and little slder. that's it. If this pad is near to edge you have to do a jumper with some thin wire… i repair a lot of broken pads in u2 always success. Tell me which pads, maybe you don't have to reapir all of it.

All prints for this ic are needed, none are N/C.

dog68 · 09-15-2014, 13:04

Quote:

Originally Posted by qasimshah5

CURRENTLY i am not able to upload any attachment due to an error and cannot ad any URL :/ so i will do it in the morning and let u know...and one more question.. according to my knowledge he didnt remove that BLACKISH RESIN on the board after removing OLD U2 IC because i think he dont know about that..so is it necessary to remove it ? if yes than please let me know how to do it

Yes, you should remove the epoxy, other wise the new ic will not go on.

qasimshah5 · 09-15-2014, 14:57

Quote:

Originally Posted by dog68

Yes, you should remove the epoxy, other wise the new ic will not go on.

oh i see..thanks for the reply but when he removed the old IC i saw that there were prints missing...so do u think that the BLACK resin also got off with it ? or the prints are OK?? and kindly tell me how to remove that epoxy

mb83 · 09-16-2014, 12:16

epoxy you should gently scratch in high temperature. I set about 300 degree… Glue is being very soft so i can remove it. It's very risky but if do it slowly and gently everything it'sshould be allright.
Once i have a glue with some fibers in it. I've changed a lot of u2's but in this case when i removed glue a remove 5 pads… it was first case in my hole carrier

qasimshah5 · 09-16-2014, 16:02

Quote:

Originally Posted by mb83

epoxy you should gently scratch in high temperature. I set about 300 degree… Glue is being very soft so i can remove it. It's very risky but if do it slowly and gently everything it'sshould be allright.
Once i have a glue with some fibers in it. I've changed a lot of u2's but in this case when i removed glue a remove 5 pads… it was first case in my hole carrier

oh i see..well i read somewhere that it can be removed on 150 degree...is it right? or 300 is must?

dog68 · 09-16-2014, 17:07

Use 300, and the cpu will be toast

dog68 · 09-16-2014, 17:10

Soak the board in thinners overnight, it will soften up the epoxy, then pick at it, with a needle.

qasimshah5 · 09-17-2014, 02:06

Quote:

Originally Posted by dog68

Soak the board in thinners overnight, it will soften up the epoxy, then pick at it, with a needle.

well ur right..i will take a look at it and give it a try ! and btw what about the missing pads?

aleycat · 01-20-2015, 22:33

same with me, i missing one pad on bottom right corner,
then the phone not turn on,
another case i broken another pad the the phone can turn on but can't charging,

there is a way to fix this missing pad ?

Thanks in adavance

jay_one · 07-01-2015, 18:51

Quote:

Originally Posted by mb83

which pads are broken? there is easy way to fix… if these pads are in center u2 you have gently do a little hole until you will see rest of ways… put some flux and little slder. that's it. If this pad is near to edge you have to do a jumper with some thin wire… i repair a lot of broken pads in u2 always success. Tell me which pads, maybe you don't have to reapir all of it.

Hello there,

missing U2 Pads A1, B1, E1, D6 and E6. Any Ideas to restore it?

Quote:

Okay so To resore a missing pad, just dig out the hole gently with a sharp scalpel knife point till you reach the second board layer where the pad was connected at.
Now fill the hole with soldering paste and heat it.

Quote:

if these pads are in center u2 you have gently do a little hole until you will see rest of ways… put some flux and little slder

How does that work exactly for U2? Any instructions?

Sorry, i cant link a picture because i'have got less then 10 Posts :-/

09-12-2014, 23:49	#1 (permalink)
qasimshah5 Junior Member Join Date: Sep 2014 Posts: 7 Member: 2256764 Status: Offline Thanks Meter: 0	Iphone 5 U2 ic 3 Prints broken Hey guys i have a problem with my iphone 5 .... i bought it in non repaired condition its battery used to drain very fast and the mobile used to become very hot but used to show charging and used to charge the battery too...later when i opened it ..there was a coil attatched with the battery's terminal(not motherboard terminal) going directly to the charging jack...i showed it to the repair man..he said that u2 ic needs to be replaced so he tried to remove the u2 ic but he damaged 3 prints under it now the phone doesnt charge now after changing serveral u2 IC but turns ON with charged battery.... is there any solution now ? plz guys i need your help i have searched the whole forum but couldnt find the damaged prints's solution...

09-13-2014, 13:27	#2 (permalink)
qasimshah5 Junior Member Join Date: Sep 2014 Posts: 7 Member: 2256764 Status: Offline Thanks Meter: 0	please guys help me ?? give me any solution?

09-13-2014, 22:53	#3 (permalink)
mb83 Freak Poster Join Date: Jun 2014 Posts: 400 Member: 2205919 Status: Offline Thanks Meter: 33	which pads are broken? there is easy way to fix… if these pads are in center u2 you have gently do a little hole until you will see rest of ways… put some flux and little slder. that's it. If this pad is near to edge you have to do a jumper with some thin wire… i repair a lot of broken pads in u2 always success. Tell me which pads, maybe you don't have to reapir all of it.

09-15-2014, 00:35	#5 (permalink)
qasimshah5 Junior Member Join Date: Sep 2014 Posts: 7 Member: 2256764 Status: Offline Thanks Meter: 0	CURRENTLY i am not able to upload any attachment due to an error and cannot ad any URL :/ so i will do it in the morning and let u know...and one more question.. according to my knowledge he didnt remove that BLACKISH RESIN on the board after removing OLD U2 IC because i think he dont know about that..so is it necessary to remove it ? if yes than please let me know how to do it

09-16-2014, 12:16	#9 (permalink)
mb83 Freak Poster Join Date: Jun 2014 Posts: 400 Member: 2205919 Status: Offline Thanks Meter: 33	epoxy you should gently scratch in high temperature. I set about 300 degree… Glue is being very soft so i can remove it. It's very risky but if do it slowly and gently everything it'sshould be allright. Once i have a glue with some fibers in it. I've changed a lot of u2's but in this case when i removed glue a remove 5 pads… it was first case in my hole carrier

09-16-2014, 17:07	#11 (permalink)
dog68 No Life Poster Join Date: Mar 2012 Location: cambridgeshire, England Age: 55 Posts: 760 Member: 1728699 Status: Offline Thanks Meter: 212	Use 300, and the cpu will be toast

09-16-2014, 17:10	#12 (permalink)
dog68 No Life Poster Join Date: Mar 2012 Location: cambridgeshire, England Age: 55 Posts: 760 Member: 1728699 Status: Offline Thanks Meter: 212	Soak the board in thinners overnight, it will soften up the epoxy, then pick at it, with a needle.

01-20-2015, 22:33	#14 (permalink)
aleycat Junior Member Join Date: Nov 2014 Posts: 7 Member: 2292360 Status: Offline Thanks Meter: 3	same with me, i missing one pad on bottom right corner, then the phone not turn on, another case i broken another pad the the phone can turn on but can't charging, there is a way to fix this missing pad ? Thanks in adavance