So, I tried making the adjustments and there was no meaningful change. I suspect there's either an internal issue somewhere or the blue gun on the CRT has died. My question is, how can I troubleshoot this further?
Thanks! I’ll take a look at that tonight as well now that I have a bit of newfound confidence in this stuff.
I wish Apple had published a technical guide to the Macintosh that covers the CC like they did with the earlier machines!
Check if all of the pads and traces to the sound chip are still OK, I believe it handles the soft power on the Color Classics. The connections of the traces to the pads of it are a bad recessed, allowing for cap goop and corrosion to more easily settle there and break the connections, from what I understand.