iPad Pro 12.9 (2nd Gen)

Problem Description	Symptoms	Solution	Source
Not charging, no power.		- If you have a tristar tester or lightning breakout board you should test that before attempting the following. - Test with a known good battery. - Replace charge port. - If the above didn’t help you likely have a dead tristar.	Source
Powers on but no display.		- Test with a known good screen. - Backlight diode blows on these really easily, extremely common repair. You may need to repair one or more backlight diodes, coils, or the filter. If the backlight filter doesn’t have continuity it will need replaced.	Source