yup, you are correct that it did nothing - ‘dim-off’ state still.
I do have a Pi 3 but it’s currently embedded into my household Volumio music server, so I don’t really want to pull that apart unless I had to.
maybe I’ll send off an email to WaveShare - worse the could do is to NOT reply I guess… not sure if they can do anything or would want to, but they did do a guide on how to work with their (HDMI) screens and Volumio, so they might be interested?
In the mean time, if you do have any other ideas, I’m game to try - worse-come-to-worse, I’d just re-flash it again and copy all my music back to it…
thx for the help so far!