iPhone 6 Plus - Touchscreen not working and lines on display - Page 2 - GSM-Forum

mimk97 · 04-05-2016, 09:16

Quote:

Originally Posted by jimchu316

Through this picture, you can find 2 places to measure -5.7v

one near U2402， other near U0900

could you share the PCB Files for PADS

jimchu316 · 04-05-2016, 10:48

Quote:

Originally Posted by mimk97

could you share the PCB Files for PADS

sorry, i canot share our company files to u.

mimk97 · 04-05-2016, 10:48

Quote:

Originally Posted by jimchu316

sorry, i canot share our company files to u.

ok, no Problem. Thanks

RocknRio · 05-16-2016, 03:31

I've checked the -5.7v near the U0900 but I get nothing even with a good working phone. Do I need to connect battery and LCD screen to get the -5.7v? I have just the charger plugged in with no LCD. Please help.

chimeto · 07-30-2016, 11:54

Quote:

Originally Posted by jimchu316

replaced u2402 but nothing
check redline way.

I would like to know what kind of software is that? the name of the box or application. Thanks.

chimeto · 07-30-2016, 11:55

Quote:

Originally Posted by jimchu316

replaced u2402 but nothing
check redline way.

I would like to know what kind of software is that? the name of the box or application

Thanks

yalamandareddy · 07-31-2016, 05:22

bro remove all 2 touch ic and check if u still get lines cpu problem , note after remove ic only vertical water marl lines appear. not like your image.

P3T3 · 07-31-2016, 10:37

Have you tested the screen on different logic board?

Platijet · 08-27-2016, 19:54

Quote:

Originally Posted by jimchu316

4, check u2402 M1 pad

This is not M1 pad but L1 pad.

gyurma85 · 08-30-2016, 13:01

Reball u2402, clean the pcb pads first

SAEIDSANGAN · 08-30-2016, 17:06

replace black ic touch

praveesh · 11-01-2016, 10:40

hi i replace ic but same problem no display no light blank lcd

makoto28 · 12-15-2016, 12:38

jimchu316 is correct, just replace u1501 if you have line & can't touch, i've fix that many times.

base on what i encounter, motherboard is clean & no other repair.

demyth · 12-29-2016, 11:56

Quote:

Originally Posted by jimchu316

1, check touch screen socket j2401

2, check DC 1.8v, 5.1v, 5.7v, -5.7v

3, check u2403

4, check u2402 M1 pad

5, replace u2402, u2401

6, cpu

if i can't get 5.1v..what should i do..i means what ic that produce 5.1v..is it u1501 or else..if u1501, replace or i can just rehot

mawaqas · 01-06-2017, 19:40

have you tried a different working LCD? happend to me a few times. the fpc connectors are not seated properly.

05-16-2016, 03:31	#19 (permalink)
RocknRio Junior Member Join Date: Apr 2015 Posts: 3 Member: 2380252 Status: Offline Thanks Meter: 0	I've checked the -5.7v near the U0900 but I get nothing even with a good working phone. Do I need to connect battery and LCD screen to get the -5.7v? I have just the charger plugged in with no LCD. Please help.

07-31-2016, 05:22	#22 (permalink)
yalamandareddy No Life Poster Join Date: May 2006 Age: 44 Posts: 1,267 Member: 278546 Status: Offline Thanks Meter: 145	bro remove all 2 touch ic and check if u still get lines cpu problem , note after remove ic only vertical water marl lines appear. not like your image.

07-31-2016, 10:37	#23 (permalink)
P3T3 Freak Poster Join Date: Oct 2014 Posts: 384 Member: 2277735 Status: Offline Thanks Meter: 215	Have you tested the screen on different logic board?

08-30-2016, 13:01	#25 (permalink)
gyurma85 Freak Poster Join Date: Dec 2013 Posts: 106 Member: 2080974 Status: Offline Thanks Meter: 12	Reball u2402, clean the pcb pads first

08-30-2016, 17:06	#26 (permalink)
SAEIDSANGAN Freak Poster Join Date: Nov 2011 Location: IRAN Age: 39 Posts: 190 Member: 1691551 Status: Offline Sonork: 100.1622582 Thanks Meter: 53	replace black ic touch

11-01-2016, 10:40	#27 (permalink)
praveesh Junior Member Join Date: Oct 2010 Location: kerala india Posts: 8 Member: 1429407 Status: Offline Thanks Meter: 0	hi i replace ic but same problem no display no light blank lcd

12-15-2016, 12:38	#28 (permalink)
makoto28 Freak Poster Join Date: May 2008 Location: SINGAPORE Age: 40 Posts: 106 Member: 781426 Status: Offline Thanks Meter: 17	jimchu316 is correct, just replace u1501 if you have line & can't touch, i've fix that many times. base on what i encounter, motherboard is clean & no other repair.

01-06-2017, 19:40	#30 (permalink)
mawaqas Freak Poster Join Date: Oct 2016 Posts: 212 Member: 2643514 Status: Offline Thanks Meter: 28	have you tried a different working LCD? happend to me a few times. the fpc connectors are not seated properly.