I used to have a Pittsburgh Modular Structure case and it had 2 difference transformers on the +12 and -12 (according to Perry at Pgh modular), which sometimes causes issues with the boot process as there is a slight delay between the lines which can mess up some digital modules. I had issues with a couple random digital modules, some of which wouldn’t even start up.
@vcvcvc_val - unfortunately those older Move cases are notorious for having power issues, so it’s most likely either underpowered or the digital boot. Let us know what happens with your testing.
Also, I think @baleen has a case like that, but got a new PSU. Not sure if he had W/ running at the time on the older PSU.