Iphone 6 no video after touch ic repair - GSM-Forum

claudyu07 · 01-13-2018, 00:57

Hi. I have iphone 6 with touch problems.
Reballed touch ic and then no video, backlight working, phone turns on and connects to iTunes , rings and all.
Reballed touch ic again, replaced it and still same.
I have checked all filters, reflow video ic but no luck.
Can anyone point me on the right direction?

Thanks

7Axis · 01-13-2018, 06:21

Touch IC shouldn't cause no display, try booting with Touch IC off the board.

modder1 · 01-13-2018, 15:41

or you floated chestnut on the other side

claudyu07 · 01-16-2018, 18:32

Replaced chestnut. Still same.

7Axis · 01-17-2018, 14:29

If it was working prior to reballing the Touch IC you definitely messed something up by using too much heat or your reball was bad, the new Touch IC could be bad also, check for shorts around, and like I said try with the Touch IC off the board, there are display traces/nets going through the Touch IC, the chip is not needed for display however if it's shorted it may cause display issue.

claudyu07 · 01-27-2018, 16:10

Working fine with touch ic out. Just no touch... will try another ic then

Hawy56oo6 · 01-27-2018, 23:22

If the display works when you remove the mason ic that mean the traces not connected correctly or melt some traces together OR wrong orientation OR bad IC

01-13-2018, 00:57	#1 (permalink)
claudyu07 Junior Member Join Date: Feb 2015 Location: Drogheda, Ireland Posts: 22 Member: 2343716 Status: Offline Thanks Meter: 8	Iphone 6 no video after touch ic repair Hi. I have iphone 6 with touch problems. Reballed touch ic and then no video, backlight working, phone turns on and connects to iTunes , rings and all. Reballed touch ic again, replaced it and still same. I have checked all filters, reflow video ic but no luck. Can anyone point me on the right direction? Thanks

01-13-2018, 06:21	#2 (permalink)
7Axis Freak Poster Join Date: Nov 2017 Location: Canada Posts: 131 Member: 2777379 Status: Offline Thanks Meter: 34	Touch IC shouldn't cause no display, try booting with Touch IC off the board.

01-13-2018, 15:41	#3 (permalink)
modder1 Freak Poster Join Date: May 2010 Location: Toronto Age: 47 Posts: 361 Member: 1295004 Status: Offline Sonork: 100.1610057 Thanks Meter: 29	or you floated chestnut on the other side

01-16-2018, 18:32	#4 (permalink)
claudyu07 Junior Member Join Date: Feb 2015 Location: Drogheda, Ireland Posts: 22 Member: 2343716 Status: Offline Thanks Meter: 8	Replaced chestnut. Still same.

01-17-2018, 14:29	#5 (permalink)
7Axis Freak Poster Join Date: Nov 2017 Location: Canada Posts: 131 Member: 2777379 Status: Offline Thanks Meter: 34	If it was working prior to reballing the Touch IC you definitely messed something up by using too much heat or your reball was bad, the new Touch IC could be bad also, check for shorts around, and like I said try with the Touch IC off the board, there are display traces/nets going through the Touch IC, the chip is not needed for display however if it's shorted it may cause display issue.

01-27-2018, 16:10	#6 (permalink)
claudyu07 Junior Member Join Date: Feb 2015 Location: Drogheda, Ireland Posts: 22 Member: 2343716 Status: Offline Thanks Meter: 8	Working fine with touch ic out. Just no touch... will try another ic then

01-27-2018, 23:22	#7 (permalink)
Hawy56oo6 Insane Poster Join Date: Sep 2017 Posts: 67 Member: 2753739 Status: Offline Thanks Meter: 7	If the display works when you remove the mason ic that mean the traces not connected correctly or melt some traces together OR wrong orientation OR bad IC