Chosen Solution
iPhone SE A1662 Power button no response. Power button feels good. Attach cable from PC using iTunes to iPhone no response Battery voltage low and was replaced Screen removed and tested okay Water mark shows a slight discoloration No corrosion on connectors Battery to logic board connector pins look okay, and ground is okay. Draws 15ma when turned on and then 11ma. Any assistance would be appreciated. Also looking for iPhone service manual test points on the logic board, thanks. Edit 5/18/2021: Measured 500ma draw after cleaning battery leads. Someone has been in here before me. Extra epoxy added.
One part of a wire broken off from connector the end was terrible soldier job.
A USB ammeter is not much good for diagnosing a phone that will not boot. You really need a DCPS with a squid. There are no service manuals for the iPhone you will need to find the schematics and a board view if you want to start checking power pails.
