There *appears* to be an unpopulated header, under the large aluminium heatsink on the rear of the PCB. It's 4 pins... hmmm... looks interesting... may have to probe that with my DMM & COM port adapter
Enough chit chat, here's the photos, including the 4 pin header photo:
I probed what I *think* is the UART header, for hours, and not a peep coming out of it. I've kept the casing off, just in case I fancy another try, another day.
I made a VERY rough looking teardown video, and only after I'd uploaded 5GB+ of separate videos did I discover that YouTube's online video has been scrapped - slightly inconvenient! Anyway, if you can handle a playlist in 4 parts, not terribly well narrated (I was going to scrap it and do it all again in ONE video, later) then have at it:
Edited by glossywhite (Thu 26-Apr-18 03:54:20)