6 plus rebooting after 4-5 minutes

[Allan]

I have a 6 plus I need to do data recovery on

History:
Came in for touch IC repair - replaced ic
Came back for touch ic repair again a few months later - added shield and replaced ic
came back about 3-4 days later saying phone wouldnt charge

Replace battery, tested charge port
fake charging drawing 0 on amp meter

replaced tristar - did not resolve
replaced tigris - did not resolve
replaced them both again

tested for shorts - none

board getting warm around cpu, but not intensly hot

Phone boots, connects to itunes but will not stay on long enough to get a backup

Connected in dfu, stays on and does not reset

Tested for shorts/open lines around both tigris and tristar, verified resistence on charging port pins

[Jessa_the_Professa]

You can verify this in 3utool real time log, but you likely have a problem with battery data---the device can't hear from the battery that temperature is okay. Make sure you are using a battery while trying to complete the backup. If not solved, then the most common failure point for batt_swi line in a 6 plus is tigris---check schematic.