iphone 7 no modem hardware after audio ic - GSM-Forum

comcell · 12-30-2018, 19:10

hi
i just recived an iphone 7 the intel version that some one fixed the audio ic and after that the iphone is with no modem hardware i reballed the baseband ic and change bb pm still no modem hardware any idea?

Jack_OH · 01-01-2019, 11:49

Maybe bb power ic, try to reball it!

comcell · 01-01-2019, 18:15

as i wrote i reballed the baseband and changed the bb power ic and it still not working the modem hardware is empty

Tony2323 · 01-01-2019, 20:36

Try restore from DFU, if the iTunes logo error ends in BB IC

Jack_OH · 01-02-2019, 14:09

Can you measure short on of cap near bb pmic?

comcell · 01-08-2019, 14:10

no shorts on caps near bb pmic

luckycool · 01-08-2019, 14:13

check the shortage on the coils near baseband ic.
if there is .. let us know

7Axis · 01-08-2019, 15:40

Power on the board and check the voltages of the 4 coils near the baseband.

I think they're PP_VSW1,2,3 and 3.

ninos22 · 01-09-2019, 15:33

Quote:

Originally Posted by comcell

hi
i just recived an iphone 7 the intel version that some one fixed the audio ic and after that the iphone is with no modem hardware i reballed the baseband ic and change bb pm still no modem hardware any idea?

You have to try again with proper temp, clear pads, and good stencil.

Shaheed sabu · 01-09-2019, 19:43

reball or change u3601

boneksl · 01-09-2019, 20:29

have u solution?
I have same problem. Everything looks ok, but no imei ;-(

comcell · 01-10-2019, 21:11

i did it twice and its not my first time fixing this problem on many iphones

Burebista · 01-11-2019, 01:54

I have posted in another thread. I did one by repalcing the main PMU:
http://forum.gsmhosting.com/vbb/13502113-post8.html

khan512 · 01-11-2019, 05:59

Why we need 10 post to

12-30-2018, 19:10	#1 (permalink)
comcell Major Poster Join Date: Nov 2004 Age: 46 Posts: 44 Member: 93937 Status: Offline Thanks Meter: 3	iphone 7 no modem hardware after audio ic hi i just recived an iphone 7 the intel version that some one fixed the audio ic and after that the iphone is with no modem hardware i reballed the baseband ic and change bb pm still no modem hardware any idea?

01-01-2019, 11:49	#2 (permalink)
Jack_OH No Life Poster Join Date: Mar 2007 Age: 39 Posts: 681 Member: 475448 Status: Offline Thanks Meter: 60	Maybe bb power ic, try to reball it!

01-01-2019, 18:15	#3 (permalink)
comcell Major Poster Join Date: Nov 2004 Age: 46 Posts: 44 Member: 93937 Status: Offline Thanks Meter: 3	as i wrote i reballed the baseband and changed the bb power ic and it still not working the modem hardware is empty

01-01-2019, 20:36	#4 (permalink)
Tony2323 Freak Poster Join Date: Sep 2010 Location: ČR Posts: 132 Member: 1388158 Status: Offline Thanks Meter: 30	Try restore from DFU, if the iTunes logo error ends in BB IC

01-02-2019, 14:09	#5 (permalink)
Jack_OH No Life Poster Join Date: Mar 2007 Age: 39 Posts: 681 Member: 475448 Status: Offline Thanks Meter: 60	Can you measure short on of cap near bb pmic?

01-08-2019, 14:10	#6 (permalink)
comcell Major Poster Join Date: Nov 2004 Age: 46 Posts: 44 Member: 93937 Status: Offline Thanks Meter: 3	no shorts on caps near bb pmic

01-08-2019, 14:13	#7 (permalink)
luckycool No Life Poster Join Date: May 2005 Location: UK Posts: 1,071 Member: 143848 Status: Offline Thanks Meter: 125	check the shortage on the coils near baseband ic. if there is .. let us know

01-08-2019, 15:40	#8 (permalink)
7Axis Freak Poster Join Date: Nov 2017 Location: Canada Posts: 131 Member: 2777379 Status: Offline Thanks Meter: 34	Power on the board and check the voltages of the 4 coils near the baseband. I think they're PP_VSW1,2,3 and 3.

01-09-2019, 19:43	#10 (permalink)
Shaheed sabu Freak Poster Join Date: Sep 2014 Location: delhi Posts: 121 Member: 2250798 Status: Offline Thanks Meter: 19	reball or change u3601

01-09-2019, 20:29	#11 (permalink)
boneksl Freak Poster Join Date: Dec 2004 Age: 37 Posts: 123 Member: 98744 Status: Offline Thanks Meter: 9	have u solution? I have same problem. Everything looks ok, but no imei ;-(

01-10-2019, 21:11	#12 (permalink)
comcell Major Poster Join Date: Nov 2004 Age: 46 Posts: 44 Member: 93937 Status: Offline Thanks Meter: 3	i did it twice and its not my first time fixing this problem on many iphones

01-11-2019, 01:54	#13 (permalink)
Burebista No Life Poster Join Date: Feb 2006 Location: In a point from Universe! Age: 40 Posts: 1,633 Member: 235325 Status: Offline Sonork: 100.1593552 Thanks Meter: 523	I have posted in another thread. I did one by repalcing the main PMU: http://forum.gsmhosting.com/vbb/13502113-post8.html

01-11-2019, 05:59	#14 (permalink)
khan512 Junior Member Join Date: Jan 2019 Posts: 3 Member: 2888174 Status: Offline Thanks Meter: 1	Why we need 10 post to