yes except this happened this morning....charged high voltage caps have the energy of a small firearm..Does this mean it is time to recount stories of bad behaviour in electronics class? Like using the high amp power supply to cut most of the way through the leg of one of the metal stools (ahem) in the lab?
Scared the he11 out of my kids and dog..
and it was running so nicely...please don't ask how it happened..

maybe a positive ground amp?