iPhone 6 red screen, water - Page 2 - GSM-Forum

bigfede · 08-28-2016, 11:17

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bigfede · 08-28-2016, 11:17

I have just reball the nand, but nothing changes. Now it won't turn on at all

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Kradziej · 08-28-2016, 11:58

Quote:

Originally Posted by bigfede

I have just reball the nand, but nothing changes. Now it won't turn on at all

Then you probably overheat cpu and balls under it exploded

. Check short on pp1v8_sdram and if its then reball cpu

.

bigfede · 08-28-2016, 12:13

0,2V on pp1v8_sdram. CPU comes very hot!

Kradziej · 08-28-2016, 14:38

Quote:

Originally Posted by bigfede

0,2V on pp1v8_sdram. CPU comes very hot!

cpu or just u1202 on the other side? measure ohm not voltage

busi89 · 08-28-2016, 14:46

Too much heat on the nand has melted balls under cpu on the other side now it's shorted to ground that's why it becomes hot. You should reball the cpu but that's a though job.

bigfede · 08-28-2016, 14:48

i've just unsoldered CPU but some pins are missing.. I need board view pub to see if these pins are needed

busi89 · 08-28-2016, 16:03

Post a picture and we can tell you. Have you separated cpu from ram?

bigfede · 08-28-2016, 17:58

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busi89 · 08-28-2016, 20:42

Ok, from what I can see you're missing two pins. Starting to count from the right, from the bottom you have pin number 6 on the fourth vertical row and number 11 on the third row.

bigfede · 08-28-2016, 20:45

Damn. So is it junk right ?

busi89 · 08-29-2016, 08:59

If you are able to see a small trace near the pins with the microscope you can try to make a small jumper. Not an easy job.

bigfede · 08-29-2016, 12:44

It seems too difficult.. is there any way to read internal memory? Such as memory in Touch ID? Even baseband

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busi89 · 08-29-2016, 14:52

No, not for iphones. I'm sorry.

bigfede · 08-29-2016, 16:36

How is it possible? They are normal memory, miso mosi, or i2c or spi

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08-28-2016, 11:17	#16 (permalink)
bigfede Junior Member Join Date: Apr 2013 Posts: 22 Member: 1927217 Status: Offline Thanks Meter: 1	Sent from my iPhone using Tapatalk

08-28-2016, 11:17	#17 (permalink)
bigfede Junior Member Join Date: Apr 2013 Posts: 22 Member: 1927217 Status: Offline Thanks Meter: 1	I have just reball the nand, but nothing changes. Now it won't turn on at all Sent from my iPhone using Tapatalk

08-28-2016, 12:13	#19 (permalink)
bigfede Junior Member Join Date: Apr 2013 Posts: 22 Member: 1927217 Status: Offline Thanks Meter: 1	0,2V on pp1v8_sdram. CPU comes very hot!

08-28-2016, 14:46	#21 (permalink)
busi89 Junior Member Join Date: Jan 2016 Posts: 10 Member: 2520494 Status: Offline Thanks Meter: 2	Too much heat on the nand has melted balls under cpu on the other side now it's shorted to ground that's why it becomes hot. You should reball the cpu but that's a though job.

08-28-2016, 14:48	#22 (permalink)
bigfede Junior Member Join Date: Apr 2013 Posts: 22 Member: 1927217 Status: Offline Thanks Meter: 1	i've just unsoldered CPU but some pins are missing.. I need board view pub to see if these pins are needed

08-28-2016, 16:03	#23 (permalink)
busi89 Junior Member Join Date: Jan 2016 Posts: 10 Member: 2520494 Status: Offline Thanks Meter: 2	Post a picture and we can tell you. Have you separated cpu from ram?

08-28-2016, 17:58	#24 (permalink)
bigfede Junior Member Join Date: Apr 2013 Posts: 22 Member: 1927217 Status: Offline Thanks Meter: 1	Sent from my iPhone using Tapatalk

08-28-2016, 20:42	#25 (permalink)
busi89 Junior Member Join Date: Jan 2016 Posts: 10 Member: 2520494 Status: Offline Thanks Meter: 2	Ok, from what I can see you're missing two pins. Starting to count from the right, from the bottom you have pin number 6 on the fourth vertical row and number 11 on the third row.

08-28-2016, 20:45	#26 (permalink)
bigfede Junior Member Join Date: Apr 2013 Posts: 22 Member: 1927217 Status: Offline Thanks Meter: 1	Damn. So is it junk right ?

08-29-2016, 08:59	#27 (permalink)
busi89 Junior Member Join Date: Jan 2016 Posts: 10 Member: 2520494 Status: Offline Thanks Meter: 2	If you are able to see a small trace near the pins with the microscope you can try to make a small jumper. Not an easy job.

08-29-2016, 12:44	#28 (permalink)
bigfede Junior Member Join Date: Apr 2013 Posts: 22 Member: 1927217 Status: Offline Thanks Meter: 1	It seems too difficult.. is there any way to read internal memory? Such as memory in Touch ID? Even baseband Sent from my iPhone using Tapatalk

08-29-2016, 14:52	#29 (permalink)
busi89 Junior Member Join Date: Jan 2016 Posts: 10 Member: 2520494 Status: Offline Thanks Meter: 2	No, not for iphones. I'm sorry.

08-29-2016, 16:36	#30 (permalink)
bigfede Junior Member Join Date: Apr 2013 Posts: 22 Member: 1927217 Status: Offline Thanks Meter: 1	How is it possible? They are normal memory, miso mosi, or i2c or spi Sent from my iPhone using Tapatalk