I found out this link - http://www.voitzsch.net/flashconv_en.shtml
A Cheap Flash modification for 5400 Flashes that makes them compatible with Minolta Digital Cameras, with almost full capability - apart from W/L HSS.
I have two 5400's: one XI and one HS. Naturally, I find much interest in converting them. I do have several questions though.
First, did anybody here modify his flashes in that way? and did someone try them with an A700? How effective it is?
Second, I understand that some backward compatibility is lost. I have Minolta 5 (Film) and 7 (Film). Does anybody know how does the flash perform on those cameras?
Last but not the least, Is there any way to put that circuit in a kind of Flash connector? That is, instead of soldiering and modifying the flash forever, attaching it to a "hot shoe" that translates the commands from the camera to the flash (That is what that circuit is doing, anyway)?