Yes, one of these days maybe I'll learn the lesson not to make assumptions with a circuit, and instead just start at the beginning: checking PS voltages.? I came across a bit of advice in an old Allen TC-3 service manual once: "When you hear hoofbeats, don't assume zebras!"? Yet I still seem to do just that from time to time...
But so far, so good, with the XB2-to-HX3.? Follow-up question, though... things do get a bit warm, in the power supply: the power transformer is very slightly warm, and the large heatsink across the rectifier and the three voltage regulators is noticeably warm, but not to the point of being at all painful to the touch.? Should I be concerned?? I'm inclined to think that's a heat sink's job, after all - to get warm so the components don't!? But, since I don't know why those fuses blew in the XB2's first life, I'm a little hesitant to just put the lid back on and call it a good job well done.
