Hi, I'm in the process of upgrading my Crack with the Speedball and have a similar issue for the large Speedball board. For the resistance checks on OA and OB my Klein DMM always reads OL, so no continuity or infinite resistance. I tried different probes and tried using the alligator clips, no matter what I try it always reads OL. It's on auto-ranging mode, and when I touch the red probe to OA or OB, I notice that it auto-ranges up to the Megaohms but then says OL at the end. I double-checked all the soldered joints are secure. 3U is soldered to G (black), 4U is soldered to B+ (red), 9U is soldered to 0A (white), and 7U is soldered to OB (white). So I don't know how to proceed. Is there an alternate location I could attach the black clip of the DMM or is 12U the only point? My 12U joint is a bit cluttered so not a lot of surface area to clip onto, but it worked for the small board voltage tests (and the stock Crack tests). Thanks
Note: My stock Crack was working without any problems before.