I recently bought a 2215 that was working pretty well although the previous owner told me about an issue with dirty switches/pots. That problem just started to act up last week: what used to be a stab

Just to be sure, I do have a question on HV safety: The scope has been disconnected from power for a number of weeks now. When starting the recap is it enough to discharge the large power capacitors?

Thanks! I checked again and it turns out I missed a second screw on the top left that attaches to the preregulator board. So there are 7 screws in total.

Hi all, I’ve recently bought a used, somewhat beat up but functional 2215. The trace sometimes shifts vertically, probably due to dirty switches. The plan is to clean some of the switches and replace