Scribd
Upload
439 views5 pages

Iphone Tristar (U2) Replacement

The document discusses the iPhone Tristar IC, also known as the U2 charging IC. It explains that a failure of this chip is a common cause of phones that won't charge or turn on after a battery or charging port replacement. Replacing the damaged Tristar IC involves pre-heating the logic board to remove the underfill around the chip before replacing it with an updated 1610a3 version that is more robust. Customers believing they have a charging issue should create a mail-in repair ticket.

Uploaded by

JoséCarlosLeme
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
439 views5 pages

Iphone Tristar (U2) Replacement

The document discusses the iPhone Tristar IC, also known as the U2 charging IC. It explains that a failure of this chip is a common cause of phones that won't charge or turn on after a battery or charging port replacement. Replacing the damaged Tristar IC involves pre-heating the logic board to remove the underfill around the chip before replacing it with an updated 1610a3 version that is more robust. Customers believing they have a charging issue should create a mail-in repair ticket.

Uploaded by

JoséCarlosLeme
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as DOCX, PDF, TXT or read online on Scribd
You are on page 1/ 5

iPhone Tristar (U2)

Replacement
Having an "i-device" not charging or slow
charging after a battery replacement and even a
new charger port is a typical sign that the
Charging IC (integrated circuit) Tristar/U2 has
become damaged and has failed. 

 
 Having a phone that won’t charge or turn on
is one thing, but knowing that there’s a chip
inside that’s damaged and preventing it from
turning on is an entirely different frustration.
But, knowing is half the battle, both when it
comes to the cables being used and the steps
needed to fix it. Did you ever suffer from an
iPhone that wouldn’t turn on, or charge over
1%?
 Want to test if you have a Tristar ic problem?
See our other blog post which details the
methods we use to determine if the Tristar is
bad before replacing the IC.
Testing for Tristar charging issues

1610A2 iPhone 6 Charging IC


Inside apple lightning cable

 Charging your iPhone using a third party


charger or USB lead that does not regulate this
as much allows for larger variables in voltage
and current, this then damages the U2 IC and
can leave you with a seemingly dead iPhone.
Another common reason for this is also
charging your iPhone from the cigarette lighter
of your car. This does not regulate the voltage
as well as the original AC adapter as the power
is coming from the alternator. If you need to
charge our iPhone or any electrical equipment
in your car we would recommend a good quality
inverter with your original charger and USB
lead.
In order to remedy the non-charging device we
need to pre-heat the board to allow for easier
removal of the IC. Once the board has reached a
warm temperature, we then need to focus the heat
around the IC to melt the surrounding under-fill, if
this is not done then removal of the chip is risky
and can cause pulled pads and exposing the
ground-plane on the motherboard.
Once the under-fill has be removed, the rest of the
process is straight forward as any other IC on the
logic board.
 When replacing the charging IC we typically
use the most updated IC 1610a3 which is a
better option as it is a newer version of the chip
that is more robust and less prone to failure
when abused
 
If you beleive you may have a i-device with
charging problems or a dead battery symbol please
be sure to Create a Mail In Repair Ticket.
1610A1 iPad Air Charging IC

You might also like