iphone 6 blinking on apple logo - GSM-Forum

HUM · 01-21-2017, 01:25

iphone 6 when charger connected
it show apple logo and logo disappear

this continuously happen
but when remove charger set off

zarbourne · 01-21-2017, 04:46

Why no one likes to give history? Water? Drop? what have you tried already??

Did you try to power on with powersupply? maybe you have faulty battery.

Connecting any iphone/ipad/ipod to charge with battery disconnected, you will have apple logo come and go.

So maybe bad battery.

HUM · 01-22-2017, 01:26

history of this phone

when customer gave me this phone with blank lcd (but it give light)

set look like water damage but some other technician already clean pcb

so i try with new lcd but same
chk lcd tracks but all are fine

change display ic but no success

finally replace u2 ic and power on the phone but no response

insert charger it show apple logo and disappear

after replace battery it fully power on and also show charging but only when set is in on condition

in off conndition no response

suddenly again lcd gone

iits connfusing

zarbourne · 01-22-2017, 04:12

Quote:

Originally Posted by HUM

history of this phone

when customer gave me this phone with blank lcd (but it give light)

set look like water damage but some other technician already clean pcb

so i try with new lcd but same
chk lcd tracks but all are fine

change display ic but no success

finally replace u2 ic and power on the phone but no response

insert charger it show apple logo and disappear

after replace battery it fully power on and also show charging but only when set is in on condition

in off conndition no response

suddenly again lcd gone

iits connfusing

When you say LCD gone, you mean just no display? is the phone still on (e.g. can vibrate or make sound)?

IF you lost backlight than I believe you have 2 problems.

Charging issue
Backlight issue

zarbourne · 01-22-2017, 04:16

When you say LCD gone, you mean just no display? is the phone still on (e.g. can vibrate or make sound)?

IF you lost backlight than I believe you have 2 problems.

Charging issue
Backlight issue

Sent from my iPhone using Tapatalk Pro

HUM · 01-22-2017, 04:31

backlight is ok
but no graphics

zarbourne · 01-22-2017, 04:53

Something is wrong with the forum!

Anyway, test voltage at the 3 caps:

If voltages are missing or low change U1501 & L1519

This is for no display

HUM · 01-22-2017, 05:28

already replaced u1501 but same

HUM · 01-22-2017, 21:58

any solution and suggestions....?

zarbourne · 01-23-2017, 03:29

Quote:

Originally Posted by HUM

any solution and suggestions....?

Did you change l1519? Did you test voltages?

Sent from my iPhone using Tapatalk Pro

HUM · 01-23-2017, 23:51

i notice that when put pressure on ic which is just below sim jack than it gives display .....but stuck on apple logo

release pressure from this ic not give display

HUM · 01-24-2017, 03:03

any idea if all these things

lcd/ display ic/ display connecter/ display ways are ok

than what other ic is responsible for this problem ?

minirogy · 01-24-2017, 07:37

check connecter battery if not connecting
or try to change battery maby battery is no good

zarbourne · 01-24-2017, 09:11

Quote:

Originally Posted by HUM

i notice that when put pressure on ic which is just below sim jack than it gives display .....but stuck on apple logo

release pressure from this ic not give display

BB CPU? Give me name of ic from schematic or atleast picture

HUM · 01-24-2017, 15:45

the ic just below sim jack when put pressure it show lcd

01-21-2017, 01:25	#1 (permalink)
HUM No Life Poster Join Date: Jul 2005 Location: karachi Posts: 8,674 Member: 161728 Status: Offline Sonork: 100.1582708 Thanks Meter: 2,237	iphone 6 blinking on apple logo iphone 6 when charger connected it show apple logo and logo disappear this continuously happen but when remove charger set off

Thread Tools
Show Printable Version Email this Page
Display Modes
Linear Mode Switch to Hybrid Mode Switch to Threaded Mode

01-21-2017, 04:46	#2 (permalink)
zarbourne Freak Poster Join Date: Jul 2008 Location: Earth Posts: 171 Member: 813803 Status: Offline Thanks Meter: 119	Why no one likes to give history? Water? Drop? what have you tried already?? Did you try to power on with powersupply? maybe you have faulty battery. Connecting any iphone/ipad/ipod to charge with battery disconnected, you will have apple logo come and go. So maybe bad battery.

01-22-2017, 01:26	#3 (permalink)
HUM No Life Poster Join Date: Jul 2005 Location: karachi Posts: 8,674 Member: 161728 Status: Offline Sonork: 100.1582708 Thanks Meter: 2,237	history of this phone when customer gave me this phone with blank lcd (but it give light) set look like water damage but some other technician already clean pcb so i try with new lcd but same chk lcd tracks but all are fine change display ic but no success finally replace u2 ic and power on the phone but no response insert charger it show apple logo and disappear after replace battery it fully power on and also show charging but only when set is in on condition in off conndition no response suddenly again lcd gone iits connfusing

01-22-2017, 04:16	#5 (permalink)
zarbourne Freak Poster Join Date: Jul 2008 Location: Earth Posts: 171 Member: 813803 Status: Offline Thanks Meter: 119	When you say LCD gone, you mean just no display? is the phone still on (e.g. can vibrate or make sound)? IF you lost backlight than I believe you have 2 problems. Charging issue Backlight issue Sent from my iPhone using Tapatalk Pro

01-22-2017, 04:31	#6 (permalink)
HUM No Life Poster Join Date: Jul 2005 Location: karachi Posts: 8,674 Member: 161728 Status: Offline Sonork: 100.1582708 Thanks Meter: 2,237	backlight is ok but no graphics

01-22-2017, 04:53	#7 (permalink)
zarbourne Freak Poster Join Date: Jul 2008 Location: Earth Posts: 171 Member: 813803 Status: Offline Thanks Meter: 119	Something is wrong with the forum! Anyway, test voltage at the 3 caps: If voltages are missing or low change U1501 & L1519 This is for no display

01-22-2017, 05:28	#8 (permalink)
HUM No Life Poster Join Date: Jul 2005 Location: karachi Posts: 8,674 Member: 161728 Status: Offline Sonork: 100.1582708 Thanks Meter: 2,237	already replaced u1501 but same

01-22-2017, 21:58	#9 (permalink)
HUM No Life Poster Join Date: Jul 2005 Location: karachi Posts: 8,674 Member: 161728 Status: Offline Sonork: 100.1582708 Thanks Meter: 2,237	any solution and suggestions....?

01-23-2017, 23:51	#11 (permalink)
HUM No Life Poster Join Date: Jul 2005 Location: karachi Posts: 8,674 Member: 161728 Status: Offline Sonork: 100.1582708 Thanks Meter: 2,237	i notice that when put pressure on ic which is just below sim jack than it gives display .....but stuck on apple logo release pressure from this ic not give display

01-24-2017, 03:03	#12 (permalink)
HUM No Life Poster Join Date: Jul 2005 Location: karachi Posts: 8,674 Member: 161728 Status: Offline Sonork: 100.1582708 Thanks Meter: 2,237	any idea if all these things lcd/ display ic/ display connecter/ display ways are ok than what other ic is responsible for this problem ?

01-24-2017, 07:37	#13 (permalink)
minirogy Junior Member Join Date: Oct 2006 Posts: 26 Member: 364824 Status: Offline Thanks Meter: 2	check connecter battery if not connecting or try to change battery maby battery is no good

01-24-2017, 15:45	#15 (permalink)
HUM No Life Poster Join Date: Jul 2005 Location: karachi Posts: 8,674 Member: 161728 Status: Offline Sonork: 100.1582708 Thanks Meter: 2,237	the ic just below sim jack when put pressure it show lcd