Good stuff chaps
I'm reasonably convinced my 1100D malfunctions are moisture related. Had another go over the last couple of nights and only once I attempted to drop the EXIF temp below 12C did I start having issues - this time an intermittent vertical line pattern in the image. It's working perfectly again this morning.
It has been a couple of warm humid QLD nights, so I'm not discouraged
I just need to work on my moisture sealing...