LG 31MU97-B / 31MU97C-B main board EBU62882801 / 62882801 - serviced, tested, $70 credit for old dud
A functional LG 31MU97-B 4K monitor main board that can fix totally dead or failing to start monitor. You can then return the old dud and receive refund to lower your total cost.
Repair service for LG 31MU97-B / LG 31MU97B / LG 31MU97C-B main board 62882801 / EBT63413699 / EAX66105904 causing dead monitor, loss of HDMI etc.
If your LG 31MU97-B 4K monitor is totally dead and does not respond to the power button you may benefit from this repair service.