iPhone SE Dead

[vic]

HI i have an iphone SE that kept restarting after a min of use. I have replaced the U2 ic and now it wont come on at all . The Amps on power supply go up to 0.08amp and then stay there.... very confused. i have replaced 3 U2 ic's still the same

[Jessa_the_Professa]

First, let's stop calling the tristar chip "U2 ic" There is no "U2 ic" in the iPhone SE and we all need to use the same vocabulary to understand each other.

Replacing tristar in the iPhone SE is very difficult, so it is not something to be done without a strong reason. WHAT WAS YOUR REASON for thinking that tristar was making the iPhone SE restart?

[vic]

First, let's stop calling the tristar chip "U2 ic" There is no "U2 ic" in the iPhone SE and we all need to use the same vocabulary to understand each other.

Replacing tristar in the iPhone SE is very difficult, so it is not something to be done without a strong reason. WHAT WAS YOUR REASON for thinking that tristar was making the iPhone SE restart?

thanks for your reply jessa. It started to happen after the screen replacement. I tried 2 other screens and it would still be the same. The reason I had decided to change the tristar was that in the past I have had iphones that would keep resetting and replacing tristar resolved the issue.

[Jessa_the_Professa]

Does it make sense that a phone that was working fine, and then had a screen replacement, would now have a damaged tristar? No. How does tristar get damaged? by electrical damage. So attempting to change tristar on the SE, when it is covered in underfill in a difficult location that will be very challenging to get off without overheating the adjacent tigris or NAND---can we agree that doesn't make sense?

So what could have been the original problem? With a history of screen replacement, what kinds of things can go wrong? Pry damage, and long screw damage. Look closely for any visual damage and tell us what you find.