I’m starting to think that I have a similar problem that another fellow said he had – which is that one of the relay’s had dirty contacts which left his rig not showing output. I don’t know if he had no output in Tune or Operate mode.
It might be worth opening up the bottom cover and checking out the relay and also to just make sure nothing got jarred in transit. I did clean up the big plate contactor relay in the Power Supply, and it did have a lot of dirt on it. In fact, I need to get some contact cleaner – especially since I am doing the occasional restore of old equipment.