Update: After a pause to address some other stuff around the house I was finally able to rebuilt some of the internals of the Roadcase Cocktail Cabinet. The most recent work items included:
Remove USB Hub, replaced by. . .
Mount Meanwell 5v PSU
Reroute all USB connections (make longer USB cables) for arcade controls direct to Pi4.
Rewire audio and LEDs directly to PSU (instead of USB hub) for power
Rewire the mains AC to incorporate a split—Power the Pi transformer and a GPIO-triggered relay
Mount and wire the relay in a project box to power the display and PSU (which in turn powers the audio and the LEDs.
Remount audio amp, reroute speaker wires.
Update my Python script to trigger the relay on another GPIO pin.
It was a lot, but I had to keep it all straight and do everything at once. Before this step, I had a USB hub tying the spinners and trackball controls to the Pi, but also providing power. This was not necessary with a small and cheap PSU. It cleared up some of the bulky power transformers and removed some hardware, but replaced it with other stuff. In the end, this is a bit more complex, but the controls are now plugged in directly to the Pi and I have a relay turning on and off the display.
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