It does not reboot, just shuts off. I'll grab a LED tester. Thank you both for your input.

HISENSE 65H6510G (13 AUGUST 2020)

When powered on, initial splash screen (HISENSE ANDROID TV) displays for a few seconds then power shuts off. Tried updating firmware with USB flash drive (can't find 4GB drive but did format larger drive in FAT32) with no luck. Flash drive would be accessed but would never get to the update process. I have ordered a board (RSAG7.820.7911/ROH, PART# 242585) from eBay which will arrive in a few days. Does anyone have any input of whether I am chasing down the right trail or should I be trying something else? I appreciate your time and wish to say thank...

Hello, All.

My Hisense 65H6510G (AUGUST 2020) will turn on for a few seconds, then shut off. Initial splash screen comes on for a few moments then shuts off. I have tried updating firmware but not having luck since power will not stay on long enough. About to buy new board but thought I would see if anyone had suggestions while I wait for the part to arrive. Thank you for your time.