Litter robot 4 (lr4) won't power on

litter robot 4 (lr4) won’t power on
no lights will come on
hard resets (3 second button push, or 60 second unplugging) do not work
power supply will power other electronics
don’t have a voltmeter
used a thermal camera to check:
power supply (is warm)
circuit board (is warm)

any thoughts or suggestions?
thank you in advance

Hello @tristan993 ,

Welcome to RobotShop community.

We are sorry to hear that you are having trouble with your Litter-Robot.

To better assist you, we will forward you now to our internal support system.

You will be contacted shortly via email with further instructions.

Sincerely,

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