Chosen Solution
So my iPhone 6 went dead and wouldn’t charge up from red icon so I sent it to a micro soldering repair place. He had it running. A year after the repair one of my cheap chargers I think fried something either Tristar or Tigris. Because phone would charge up slowly and heat up considerably while charging probably due to cheap chargers. So I went ahead and opened up the iPhone and took out Tristar, the Tristar was recently replaced by the guy so I put a new one in there. The phone took a while to boot up but was running faster than before but wouldn’t charge. I tried heating it up a bit more to see if it was seated properly but it went dead after that. Any clues as to what’s going on here? I checked the multimeter and I’m getting no charge. It briefly had a reading when I replaced the Tristar but despite that wouldn’t hold a charge.
I know it may sound unsympathetic but the main clue here seems to be you have no experience in microsoldering. Replace or reball and try again, maybe you’ll be luckier next time. If not, check Tristar and Tigris power/data rails to get some clues..nobody can tell what’s wrong without testing.
