iPhone 4s No display - GSM-Forum

Yasser · 08-07-2016, 00:28

Hi,

I have a iPhone 4s which was initially having issues in iTunes while 'Restoring software'. It was giving ITunes error 21. There was not display when I had received this iPhone to begin with.

I have now managed to do the firmware update successfully.

But the issue is:

1. No display. When I switch it ON, the apple logo appears for like 1 second and then screen is black.

2. I have tried with other screens but same.

Please advise which IC's I need to replace or reflow to get the screen working?

Many Thanks,

Regards,

Yasser.

toninaga · 08-16-2016, 18:14

hi,

not tested, but try this change
backlight ic coil for iphone 4s

<<BEST>> · 08-18-2016, 06:34

Same issue but not solve . Can any help us ?

HDccam · 08-22-2016, 15:24

You can not reflow ic's on an iPhone 4s, since they are all glued and will give a short when heated. Check for shorted caps

<<BEST>> · 08-24-2016, 19:07

Cheak light coil and light ic

08-07-2016, 00:28	#1 (permalink)
Yasser Freak Poster Join Date: Jan 2002 Location: London, UK Age: 49 Posts: 130 Member: 8336 Status: Offline Thanks Meter: 3	iPhone 4s No display Hi, I have a iPhone 4s which was initially having issues in iTunes while 'Restoring software'. It was giving ITunes error 21. There was not display when I had received this iPhone to begin with. I have now managed to do the firmware update successfully. But the issue is: 1. No display. When I switch it ON, the apple logo appears for like 1 second and then screen is black. 2. I have tried with other screens but same. Please advise which IC's I need to replace or reflow to get the screen working? Many Thanks, Regards, Yasser.

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08-16-2016, 18:14	#2 (permalink)
toninaga Junior Member Join Date: May 2016 Posts: 1 Member: 2580099 Status: Offline Sonork: toninaga Thanks Meter: 0	hi, not tested, but try this change backlight ic coil for iphone 4s

08-18-2016, 06:34	#3 (permalink)
<<BEST>> Freak Poster Join Date: Jul 2016 Location: I N D I A Posts: 127 Member: 2599891 Status: Offline Thanks Meter: 47	Same issue but not solve . Can any help us ?

08-22-2016, 15:24	#4 (permalink)
HDccam No Life Poster Join Date: Mar 2012 Location: Amsterdam, Netherlands Posts: 754 Member: 1732818 Status: Offline Thanks Meter: 532	You can not reflow ic's on an iPhone 4s, since they are all glued and will give a short when heated. Check for shorted caps

08-24-2016, 19:07	#5 (permalink)
<<BEST>> Freak Poster Join Date: Jul 2016 Location: I N D I A Posts: 127 Member: 2599891 Status: Offline Thanks Meter: 47	Cheak light coil and light ic