Combine this with the detachable power cord and it should be feasible to fix at least some parts yourself. iFixit cautions that it hasn't tested for possible software restrictions on repairs.

Apple's newly released HomePod mini features a USB-C power cord that plugs into a separate power adapter, and there was speculation that the cord could perhaps be removed, but that's not the case.

Although a bit more expensive than other options, the Power Center Vertex XL is a solid surge protector with two nicely braided cords which should be long enough for any setup. The detachable USB ...

While not detailed in the tech specs, MacRumors can confirm that Apple's new HomePod mini features a non-detachable power cable that ends with a USB-C connector for use with the 20W power adapter ...