4 
3 Won't power on and smells burnt after attempting to change the screen
Hello I was changing the screen on an iPhone XS max. Like a dumb *** I forgot to unhook the batteries and now the phone will not turn on and it smells the burnt. I really want to fix this phone as I'm trying to do this to make extra money and this one belongs to someone else. I understand it may take some fine soldering and I'm prepared to do that. I just need help troubleshooting to find exactly what part to change. From what I figured out so far I'm thinking I fried the power ic. Am I even close? Can someone with some expertise in the field please help? I really appreciate any input Thanks and have a great day!
crwdns2934109:0crwdne2934109:0
crwdns2889612:0crwdne2889612:0
0
101 
crwdns2944067:03crwdne2944067:0
Hello again everyone.
I decided to try the screen on this phone again and guess what. It worked! Everything works as it should. I have no idea what went wrong but this thing smelled bad and would not even power on a week ago. It's just been sitting on the shelf and decided to come back to life. I'm glad I didn't send it off to get the motherboard repaired for $300. Anyway thanks to everyone who did respond to my question
crwdns2934271:0crwdnd2934271:0 Neil Borne crwdne2934271:0
That’s good news! I would go buy a lottery ticket if I were you.
crwdns2934271:0crwdnd2934271:0 Chris Stables crwdne2934271:0
Yes Chris it is very good news since instead of having to pay out of my own pocket to get the lady's phone fixed or buying it from her I ended up making a profit as planned. She was ecstatic and so was I. I may grab a lottery ticket but I think that payment for the repair was my scratch off.
I just wish I knew exactly what happened and why it smelled and wouldn't power on and then decided to work perfectly after sitting for a week. I'm sure if the right person sees this they'll chime in with an answer.
crwdns2934271:0crwdnd2934271:0 Neil Borne crwdne2934271:0