Restore successful but boot loop

Hello.

So i get this iPhone 7 on my desk, with water damage, very light corrosion here and there, cleaned and replaced the caps who seemed damaged, now the phone charges normaly (~1A on a 1A charger).

The iPhone turns on and after ~5 second resets itself, so i thought i might be the iOS that is the problem, so i restored with iTunes to latest version, all went well no errors the screen was lit the entire time with the Apple logo and the progress bar. After the restore finished, the iPhone went down and turned back on, but still the boot loop after ~5 seconds.

I repalaced/rebaled the Tristar and Audio IC’s also measured all the relevant main voltages. Also tried to turn on the phone without all the flexes… still boot loop.

Any hints?