FWIW, I had one of those bricks with the reversed polarity, I just took it apart and swapped the power plug leads. While I was in there, I replaced the troublesome fuse with an appropriately rated PTC. Serves the same purpose, but when you remove power for a minute, it's as good as new with no screwdrivers or fuse replacements.
I popped the rubber feet on the brick with the intention of taking the case apart. Burnt, I seemingly don’t have a screw driver that can loosen the screws to separate the case. What tool do I need?
and where can I get the fuse replacement?