Black/Flickering Screen Fix
I ran into the flickering screen issue below. I saw a few posts that had similar issues and were able to fix it by lowering the screen refresh rate.
I couldn't get far enough into the menus to try this fix, but Prusa Support was able to help me do it "blind" and that fixed it (Huge Thanks!). The steps below are what they sent me (some paraphrase for forum clarity):
Verb Convention:
1 Step=move the knob one click to the indicated direction (for example, 1 step counterclockwise)
Excess = move the knob a lot of steps (so that we reach the final item in each menu)
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Please restart the printer, then please follow these steps exactly as indicated. If you miss one step, or think you missed it, it's best to start all over.1. Restart the printer, give it around 30s to fully boot.
2. Excess clockwise, so that we have the selector at the Info Menu.
3. 1 step counterclockwise, this will place the selector at the Settings Menu
4. Press the control knob.
5. Excess clockwise, this will bring the selector to the System menu (not relevant)
6. 2 step counterclockwise, this will bring us into the Hardware menu
7. Press the control knob.
8. Excess clockwise, this will bring the selector to the Display refresh rate.
9. Press the control knob
That fixed things for me and I am back to printing.
If you run into this screen issue, even if this solves it, please let support know so they can track affected printers.