Having problems while replacing iPhone 7 audio IC
For a little background, I am fairly experienced with board-level repairs on iPhones. I’ve successfully replaced countless tristars, touch ics, etc. there is one problem I seem to continually fail to fix, however, and that is iPhone 7 and 7 plus audio ic fault.
today, I have spent a good few hours working on one. I’ve replaced the ic about 6 times, each time checking my jumpers in diode mode to make sure they aren’t the problem. I have also checked any components around the chip that may have been nudged. The phone still boots, but slowly and with audio problems. I do notice that, unlike the tristar and touch ics I’ve replaced, I never see the chip “wiggle” and set itself into place when replacing the ic, it seems to just stick and not move, even when I gently poke it with a tweezers, which I think may be related to why my attempts have been unsuccessful. Initially I thought this may be because my hot air station isn’t set high enough, but I’ve already got it set to 390C at about 40 airflow on my Quick 861d and I didn’t want to set it too high and kill the board. any tips or possible solutions are greatly appreciated!