A power supply arrived from Ray Carlsen, and it works great. I spent the time while I was waiting by soldering a really bad video cable. I only managed to melt one DIN plug in the process!
It looks much better in person than in this picture. There is just a faint hint of a ghost on some of the characters, and I think I can hear a very quiet buzz even when the C64 is off.
Since the + and : keys are broken on my keyboard, I’m not sure how to test the function of the sound chip. It seems like all the example C64 BASIC code I found online (including an infamous one-liner) needs either the + or colon keys to operate. Why couldn’t it have been one of the useless keys, like Clear? Oh well, I guess I’ll just have to wait a little longer for new keys and stems.
It’s really hard to take a picture of a CRT.
Next step will be to reassemble the keyboard when the replacement keys arrive, fix up the case so the motherboard doesn’t wobble, and then see if the 1541 disk drive that came with the machine is any good. For now, though, knowing that it works is good enough.