As for the capacitor coupled output, I got it, thanks! So if I connect a speaker, should I expect that DC voltage to disappear? And would measuring across the speaker terminals with the speaker connected give me a better idea of whether there's an actual DC issue?

But also, am I correct in assuming that the only resistors actually needed for this circuit to work are the ones physically present on my board? Even though the schematic shows around 30 more resistors? I may be a newbie, but this seems like a big discrepancy to me (?)....

Oh, that's excellent info. Thank you very much! I'll test it with a dummy load.

What about my "ghost" resistors? Would you happen to know something about that?

Hey everyone,

I'm from Geneva, about 55ish, trained as a watchmaker, but I don't do that professionally anymore—just as a hobby. These days, I have an office job, which gives me time to keep up with my passion for fixing things, especially vintage stuff. I've always been into watches, but recently, I've discovered a strong interest in electronics—mainly audio/hi-fi gear and old game consoles.

I'm pretty new to electronics, but I'm eager to learn. I've got the basics down—I know (or think I know) what the main components are, what they do, how they can fail, and...