Hey - We've got a Fanuc R-J3 controller that looks like the motherboard simply isn't powering on. All the other boards in the controller have LEDs indicating they are alive, but no signs of power on the main motherboard LEDs. Any ideas on how to check this is getting power? Upon booting, the teach pendant says motherboard not found, which makes sense since it looks like it is not powering up. Perhaps there is a connector or power supply I can check. Thank you!
This is a used controller we are setting up for the first time, so not a failure of a previously running unit.