Well, this iPad is not charging. How do you determine whether to change battery, charging port or fix motherboard?
A Tristar Tester will help you work it out quick.
Step 1
Plug it in.
This one shows a caution sign, indicating a faulty U2 IC.
Step 2
Press the right button to run a scan.
Step 3
The result reads All Tristar/Hydra test has failed.
This confirms that U2 IC is faulty, you quote customer for the repair now.
Step 4
Repair the IC..
Step 5
Test again. The caution sign shown before is gone.
Step 6
Click the button to run a quick test, if "PASS!" then congrats!
If not you can repeat the steps to fix other issues.
This device saves us a lot of debugging time.