I'm slowly getting somewhere. Disconecting transformers did bring the ham down, but to my surprise not exactly to the level where it was before-it's unfortunately stronger. And all this after my heroic removal of Holcos from the grids of V2. The ham is there, its level varies from annoying (standard) to only lightly hearable depending on the orienation of the signal and PS boxes (the PS box is closed, the signal is still open). Strangly it also decreases a bit when I touch the case, possibly indicating a poor grounding of the cases, which is not the case given my religious approach to it...the fight with ham continues, i'm still not in the position to start wityh the transformers... BTW they seem like one layer of mumetal, i glued them to the Cu plate with silicone, but the cases wanted to be grounded (at least this is what I inferred)--hence a strips of braid in the picture. |
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