Ike,
I can get the back lid off no problem. (I assume your talking about the black piece with the f-stop guide wheel on it)
How do I get to the battery once that is off? My main strobe is new, it has an oring in the back cover and the battery slides out when opened.
This unit seems to have the sealed compartment inside the unit. there is a plastic post sticking up in the center of the unit that you can turn which will stick two plastic pieces out to hold the back cap on. The back screw-on cover on this unit has no o-ring, and doesn't appear to be water tight.
I guess I am dense, I still can't see what I am suppose to unscrew after i get the back cover off to access the battery?
ps: I am told that this unit was recently updated and serviced by the origianl owner. I have a message to him, but hes out diving 