Does Lilliput A7S monitor work with the BMPCC4K?

All I get is a blank blue or gray screen.

It works great with my BMPCC But cant get it to work on the BMPCC4K

Does anyone have any advice?
I'd hate to buy a new monitor, only to find out it was a simple setting adjustment.

Found problem... I was using an 'L' connector at one end, I removed it, thankfully it works.