Testing U2 ic on iphone 6 - GSM-Forum

mawaqas · 01-05-2018, 13:17

Hi i was wondering how do i test U2 IC to find out if its working properly or not on iphone 6 and the rest. What sort of voltage reading i need to look for? how does it even work..

gsm-raj · 01-05-2018, 18:08

U2 ic
This may causes dead and also charging not store even shows or and usb not detect by pc too.IF these cases that is the fault of u2 ic

Ashraf hossain · 02-15-2018, 10:23

Quote:

Originally Posted by mawaqas

Hi i was wondering how do i test U2 IC to find out if its working properly or not on iphone 6 and the rest. What sort of voltage reading i need to look for? how does it even work..

power on with dc power supply. after sleep mode device amp should write between 0.00 to 0.01 when u2 ic good.

deegee2016 · 02-20-2018, 19:57

Hi there PM I did a write up abt TriStar testing on my website blog can't post link on here been told off already for putting it up .

Also testing TriStar tester PCB.

Like the previous guy said when idle consumption current should go to 0.01 , I had one pulling 120ma on idle draining battery but all TriStar functions worked USB, and charging , symbol functions etc . TriStar_bypass at 2.4v instead of 3.0v and also the overprotection line from Tigris to TriStar was faulty .

3 days on and battery at 78% on idle .....from 10 hrs 100%-20% before....

Sent from my X98 Plus 3G using Tapatalk

debeliamark · 02-21-2018, 07:00

I was use something like to check it before open it:

You can buy it modern variant cheap here .

dazzlebb · 02-21-2018, 09:14

Quote:

Originally Posted by debeliamark

I was use something like to check it before open it:

You can buy it modern variant cheap here .

I bought 1 of these a couple weeks ago how does it work

Sent from my iPhone using Tapatalk

shafee31133 · 02-21-2018, 10:13

https://www.youtube.com/watch?v=QY8Ajk5JJUk

it will help u to know how its work

deegee2016 · 02-21-2018, 12:28

This should help shed some light on TriStar ..

There is also a post testing the TriStar tester and how to use it .

Prefer the normal way of testing the voltages and opening the device compared to the tester tool...

https://goo.gl/NHyZM4

Regards Dee

Sent from my X98 Plus 3G using Tapatalk

dazzlebb · 03-04-2018, 15:14

With the wee tester how do you know if the u2 is at fault because i have tested x2 iPhone 5c & x2 iPhone 5s & getting ol at number 4

Sent from my iPhone using Tapatalk

deegee2016 · 03-04-2018, 17:31

You will get ol at pin 4 as its the USB line and is held shut.

That tester is only any good for current testing really best way is to manually test voltages.

Its being sold and misinformed of the usage.

Only a few pins reach TriStar e75 data lines waste of time if you ask me.

Its use was knockteslas TriStar testing kit with two multimeters linked together one reading current pull and the other supplying 4 v via a battery .

Hope it helps

Sent from my X98 Plus 3G using Tapatalk

dazzlebb · 03-04-2018, 20:17

Thank you

Sent from my iPhone using Tapatalk

tochits · 03-05-2018, 01:38

another easy way to check U2 ic on apple device if its faulty.

disconnect battery and put it on charge.(must have a good working charging port)
if the device reboot on apple logo.U2 IC is good
if the device won't reboot on apple logo...U2 IC problem

dazzlebb · 03-05-2018, 20:30

Thank you tochits that seems a easier way to test lol

Sent from my iPhone using Tapatalk

01-05-2018, 13:17	#1 (permalink)
mawaqas Freak Poster Join Date: Oct 2016 Posts: 212 Member: 2643514 Status: Offline Thanks Meter: 28	Testing U2 ic on iphone 6 Hi i was wondering how do i test U2 IC to find out if its working properly or not on iphone 6 and the rest. What sort of voltage reading i need to look for? how does it even work..

01-05-2018, 18:08	#2 (permalink)
gsm-raj Freak Poster Join Date: Jul 2014 Location: nepal Posts: 106 Member: 2226403 Status: Offline Thanks Meter: 32	U2 ic This may causes dead and also charging not store even shows or and usb not detect by pc too.IF these cases that is the fault of u2 ic

02-20-2018, 19:57	#4 (permalink)
deegee2016 Freak Poster Join Date: Oct 2016 Posts: 112 Member: 2634857 Status: Offline Thanks Meter: 25	Hi there PM I did a write up abt TriStar testing on my website blog can't post link on here been told off already for putting it up . Also testing TriStar tester PCB. Like the previous guy said when idle consumption current should go to 0.01 , I had one pulling 120ma on idle draining battery but all TriStar functions worked USB, and charging , symbol functions etc . TriStar_bypass at 2.4v instead of 3.0v and also the overprotection line from Tigris to TriStar was faulty . 3 days on and battery at 78% on idle .....from 10 hrs 100%-20% before.... Sent from my X98 Plus 3G using Tapatalk

02-21-2018, 07:00	#5 (permalink)
debeliamark No Life Poster Join Date: May 2001 Location: Bulgaria Age: 56 Posts: 4,796 Member: 4627 Status: Offline Sonork: 57528:debeliamark Thanks Meter: 1,034	I was use something like to check it before open it: You can buy it modern variant cheap here .

02-21-2018, 10:13	#7 (permalink)
shafee31133 Junior Member Join Date: Dec 2016 Location: UAE Age: 35 Posts: 21 Member: 2659137 Status: Offline Thanks Meter: 4	https://www.youtube.com/watch?v=QY8Ajk5JJUk it will help u to know how its work

02-21-2018, 12:28	#8 (permalink)
deegee2016 Freak Poster Join Date: Oct 2016 Posts: 112 Member: 2634857 Status: Offline Thanks Meter: 25	This should help shed some light on TriStar .. There is also a post testing the TriStar tester and how to use it . Prefer the normal way of testing the voltages and opening the device compared to the tester tool... https://goo.gl/NHyZM4 Regards Dee Sent from my X98 Plus 3G using Tapatalk

03-04-2018, 15:14	#9 (permalink)
dazzlebb Freak Poster Join Date: Sep 2011 Posts: 114 Member: 1655936 Status: Offline Thanks Meter: 4	With the wee tester how do you know if the u2 is at fault because i have tested x2 iPhone 5c & x2 iPhone 5s & getting ol at number 4 Sent from my iPhone using Tapatalk

03-04-2018, 17:31	#10 (permalink)
deegee2016 Freak Poster Join Date: Oct 2016 Posts: 112 Member: 2634857 Status: Offline Thanks Meter: 25	You will get ol at pin 4 as its the USB line and is held shut. That tester is only any good for current testing really best way is to manually test voltages. Its being sold and misinformed of the usage. Only a few pins reach TriStar e75 data lines waste of time if you ask me. Its use was knockteslas TriStar testing kit with two multimeters linked together one reading current pull and the other supplying 4 v via a battery . Hope it helps Sent from my X98 Plus 3G using Tapatalk

03-04-2018, 20:17	#11 (permalink)
dazzlebb Freak Poster Join Date: Sep 2011 Posts: 114 Member: 1655936 Status: Offline Thanks Meter: 4	Thank you Sent from my iPhone using Tapatalk

03-05-2018, 01:38	#12 (permalink)
tochits Freak Poster Join Date: Sep 2008 Location: U.S.A Posts: 382 Member: 856640 Status: Offline Sonork: 100.1606320 Thanks Meter: 281	another easy way to check U2 ic on apple device if its faulty. disconnect battery and put it on charge.(must have a good working charging port) if the device reboot on apple logo.U2 IC is good if the device won't reboot on apple logo...U2 IC problem

03-05-2018, 20:30	#13 (permalink)
dazzlebb Freak Poster Join Date: Sep 2011 Posts: 114 Member: 1655936 Status: Offline Thanks Meter: 4	Thank you tochits that seems a easier way to test lol Sent from my iPhone using Tapatalk