[jrblasde]

Mr. Fixr, you are right. I looked back at my notes, and it turns out that I did not use type Y caps on my model 49-906's filter caps. For some odd reason I was thinking I had done so.

    Morzh, thank you for the detailed insight into the different types of capacitors. I appreciate that! It's funny--I am a transmission station engineer, and deal with carrier signals and interference on lines all the time. However, the means are a bit different here when we're only working with 120V instead of hundreds of thousands of volts. The means of fault mitigation are different, too! I am realizing I have much to learn.

    I will use type Y safety caps for the two capacitors on the primary side of the transformer (C100A and C100B), and regular electrolytic capacitors for the filter caps. Thank you all!