Time to officially call out a module maker who created big problems for me twice and is not responding to emails or Facebook messages:
Klavis.
I have an A-100 84hp 9u with PSU2. The NoDrain is supposed to convert 12v to 5v and put it back in the bus. The first one fried my two 5v modules (SuperSynthesis CEM3328LPF and Dove Audio Waveplane). The second one seemed fine: wary of what happened before, I tested it by plugging it into a bus with no other modules plugged into it. The 5v LED lit up fine so I hooked the other modules on that rail back up. When I flipped it back on, the 5v LED on the bus was not lit and neither 5v module worked AND two modules that were on that bus are all messed up: Abstract Data Octocontroller and Befaco Rampage. The Octocontroller just has LEDs blinking wildly on it and the Rampage has every LED lit solid and doesn’t respond to knob, switch, or slider changes.
If someone from Klavis is reading this, hey, I’ve tried emailing and writing you on Facebook. What gives? This thing is junk (2-for-2 junk in my experience) and that also sucks because I love your Twin Waves and wanted to buy another until these NoDrains kept on failing AND KILLING OTHER MODULES.
If anyone here knows someone from Klavis, tell them they need to get in touch.
[Shout-out to Luigi @ Luigi’s Modular Supply and Paula @ Dove Audio for providing excellent customer support as I’ve gone through this.]