I have a Black + Decker dust buster vacuum. It works fine, but it comes with a silly and hard-to-replace power adapter. It's only hard to replace due to the funky DC power connector. Otherwise, it's just a cheapo 15vdc power adapter.
Here are the tech details if you're thinking of replacing yours.
- BLACK+ DECKER
CLASS 2 POWER SUPPLY
P/N: 90629039
MODEL: SSC-150015US - INPUT: 100-240VAC, 50/60Hz, 200mA
OUTPUT: 15VDC, 150mA
Mine puts out a voltage of 16.4 VDC when idle. As I face the connector, the positive pin is on the right, as shown in the picture.
If my power adapter were to break, I'd save this unique DC connector and solder it to an aftermarket power adapter that matches these specs, perhaps something like this one on Amazon.