Why is this listed as a repair/replace guide for the joysticks? They're only showing how to get to the plastic thumbsticks and not the actual joystick assembly, so this is basically useless.

I replaced my battery without issue but the problem remains the same - the phone will not respond in any way. I’m noticing now, however, that the EMI shield over the A8 chip gets warm when the (new) battery is connected after pressing the power button. Does that mean I need a new logic board? Anything else I can try?

It’s had no liquid damage I know of and I’ve always only used Apple chargers & Lightning cables.