iphone 7 plus excessive battery drain and failed restore

Hello Jessa,
https://forum.ipadrehab.com/forum/ip...failed-restore
I've...

[lots2learn]

I had a partial short on PP1V8_SDRAM(seated resistance of all lines PP1V8_SDRAM compared against known good were less than half of what they should be)...

[lots2learn]

Just to confirm. The rapid battery drain wouldn't be the cause of the phone failing to restore? My understanding is that the failure to complete update...

[lots2learn]

Never noticed excessive battery drain before/after I completed the Audio IC repair many months ago.....
Now.....

1. Phone boots to the home screen

...

[lots2learn]

Thanks. Would it be correct to say then, based on the posted readings, that the short on the main power rail is a not a full short but a partial shor...

[lots2learn]

Thanks - that makes sense.. I'll put this on the backburner until I can pick up a few more known good boards

[lots2learn]

DCPS 4.0V max current set to 3A
into V_BATTERY 50mA B4 PTB*
into V_BAT (VDD_MAIN)2.13A B4 PTB
V_BAT seated resistance = 0
desoldered...

[lots2learn]

Hello Jessa. Four years ago you made a you tube video How to find a short circuit ---Freeze spray for the Win - https://www.youtube.com/watch?v=1JdhG...

[lots2learn]

DCPS 0mA before PTB
PTB 60-70mA. Remove tweezers from power on pins drops back to zero

1. Main power rail VBAT IS present
2. Power on signal (PWR_ON)from

...