I called the Dyson service line and after trying a few different things to get my grandmother's vacuum working again, I was referred to a Dyson Service Center in California almost an hour away. We were leaving the next day for Arizona and the representative set us up with this location in Phoenix.
I brought the vacuum in expecting a large facility and at least a few hour turnaround (though I was expecting to have to come back the next day). Instead, I found a small suite with just two employees there working. I filled out a small piece of paper then Chris came out to take a look at my grandmother's machine. He ran a few tests and came back around 10 minutes later after having diagnosed the problem. This was back in July, so I'm not sure of the exact price I was quoted at, but the plug needed to be replaced and it was going to be around $100. I expected that the plug was bad and watched a couple of home repair videos on YouTube before taking the machine in. We discussed my options and I elected to try to fix it myself.
Chris went back to put the machine back together and soon came back out with it. To my great pleasure, Chris performed a one-time courtesy repair and I was out the door with a clean, repaired machine.