ASUS TP501UA No Display on Battery

[Gecko-EC]

Hi to all, Hope someone can assist me....Got an ASUS TP501U in from a client. Laptop powers on, but screen will only initialize with the charger connected.
Battery takes and holds charge just fine. Also USB ports fail after a few minutes of use.
Latest BIOS loaded. RAM swapped. HDD's removed. Just Mainboard and screen plugged in...
I am thinking ITE IT8995 chip has failed or needs a reflow...Thoughts?

[mcplslg123]

ON battery only,you dont get display on screen.Right? Attach a usb keyboard and see if numlock light glows on toggling numlock key. This'll confirm whether mb is posting in battery or not. Try another screen also.

[Gecko-EC]

POST if fine on battery. If I plug charger in, screen is perfect. Unplug the charger and I flickers and fades to black. It almost seems as if there is not enough power being provided when on battery. The battery however if in great condition. The reason I am considering the ITE IT8995 is because the USB3/USB-C ports are also affected.

[mcplslg123]

Search for other threads with flickering screen on asus.Usually its the screen itself in case of asus.You just need to replace a coil marked "100" near backlit controller on the screen itself. Weird but works for many users. Thats why i asked you to try another screen.