Display went out on thermostst, breakers are still on "on", is there an internal reset button?

The unit's circuit breaker is there in case of internal faults in the uinit. The best option is to contact the dealer from whom you purchased it or the manufacturer.

I’m happy to help further over the phone at https://www.6ya.com/expert/donald_f2ed37026a3ac881

Something has failed internally, either a fuse or control board or power supply board. I gather it doesn't have sound either?

There is an internal fuse. Be careful high voltages present even if the microwave is unpluged.

Good luck

"F35" means Analog Pressure Sensor Failure

If the washer does not accept inputs from the control panel, follow the Hard Reset steps below to reset the control:
Unplug or turn the circuit breaker off for 30 seconds.
Plug the power cord into the wall outlet or turn the breaker back on and wait 30 seconds.
Press the Pause / Cancel / Stop button twice to clear the display.
Start a short cycle, to check operation of the appliance, by selecting a cycle and pressing and holding the start button until the appliance starts.

Note: If the Hard Reset does not work, there may be an internal failure with the washer, that requires service.

Hope this helps.

Not near enough info here to even speculate. What is the model #? Does the manual have a reset procedure? Try turning off the breaker for 15 minutes,

check procudure for removing the unit from "showroom mode"

Go to panal and reset control. Small reset button on control board. Let me know if it clears.James

Need model number to help with this.

check the control fuse and the step down transformer or wiring between the thermostst and the unit

There won't be a reset button.

Is it dead? No display, no lights, etc.?

If your outlet is live but your microwave is dead, then you likely have an open internal fuse, thermostat or thermal cutout.

Please post back if you need more help and think you or a friend want to work on it.