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RE: traces at last....

Vinnie, the 120 Hz energy is visible in the form of smaller peaks that fall in-between the 60 Hz energy. They're also occurring "underneath" the 60 Hz peaks, but being masked. This could all be caused by a number of things, and maybe more than one. Generally speaking, 60 Hz can be picked up from the PS magnetics or from the surrounding environment. 120 Hz might be from the PS filter or filament doubling (my 211s did that). If you want to probe the B+, you'll need a high-voltage probe. However, a simpler method is to model the PS in either PSUD or SPICE. If you know all the characteristics of the components in the power supply, the simulators will be very close to real world. 2.5V is quite a lot of ripple, so I suspect this is occurring in an early stage and being amplified.



Edits: 10/24/16
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