IBM 5150 resurrection. Failed PSU and shorted expansion cards

Join me in my attempts to save my IBM 5150. After a spectacular PSU failure and a shorted expansion card, I'm trying to get the system up and running again. Follow me as I make mistakes, get certain insights and throw in some lessons learned at the end Also, lots of thanks to the visitors / maintainers of the following sites : RetroMachines facebook group : https://www.facebook.com/groups/RetroMachines/ Vintage Computer Federation Forums: http://www.vcfed.org/forum Great reference for all IBM 51xx PC Family Computers: http://minuszerodegrees.net