iPad 7's are known to have CPU problems. This is a manufacturing defect in which the solder balls of the CPU dry out, resulting in dead iPads. Most likely, it started working after heat was applied when PMIC was replaced. Try heating the CPU at 180°c for 1 minute and test it out.
The only solution is to recall the CPU, which is a highly technical and time-consuming job.
Hi,
iPad 7's are known to have CPU problems. This is a manufacturing defect in which the solder balls of the CPU dry out, resulting in dead iPads. Most likely, it started working after heat was applied when PMIC was replaced. Try heating the CPU at 180°c for 1 minute and test it out.
The only solution is to recall the CPU, which is a highly technical and time-consuming job.
BR
Francis