[drakelist] AC3 hum

[Dick Harms PA2DW]

Hi all,   I am using an AC3 in combination with my T4XC. Recently I exchanged all the caps and I find that the transformer makes a loud hum ever since. More than before exchanging the caps I think. Especially if I mount the PSU inside the MS4 cabinet, it sounds like a nuclear power plant, it cannot be normal. I measured the voltages; no ripple. The caps are all ok, no polarisation trouble as far as I can see. Any of the wise man here has a clue?   73, Dick PA2DW