05-07-2023, 02:31 PM
So I thought, lemme check what shape are the filtering caps are.
After I reassembled my speaker with 125C transformer and hooked it up, I populated the tubes and saw the rectifier outputting about 180V which quickly disappeared once the power was off (good sign).
So then I waited for the radio to warm up, and a pretty nasty hum came out, but then I realized it reacted to the volume and tone ctl pots, so I rotated the dial and got my local station about where it should be on the dial (goes towards the antenna coil rewind). So, now I know that radio
1) works
2) needs those caps in the can changed.
I decided, given the thickness of the tabs and the effor it will take to unbend, remove trhe can and then empty it and so on, to simply keep cutting the wires one by one, trace them and replace the caps outside the can. It goes against my own rules, but then the effort should be commensurate with the desire to keep that particular radio authentic, and, well, this is not one of my bucket list ones, plus some caps could not be restuffed anyway due to the way they were, so I allowed unadultarated yellow axials to live under the chassis, no cosplay.
So both good and...neutral news. I did not expect the old cap[s to be ideal, it was just when I measured the capacitance it was right on the money with the 10uF filter cap and so I thought, what if....well, OK, the "if" did not materialize.
After I reassembled my speaker with 125C transformer and hooked it up, I populated the tubes and saw the rectifier outputting about 180V which quickly disappeared once the power was off (good sign).
So then I waited for the radio to warm up, and a pretty nasty hum came out, but then I realized it reacted to the volume and tone ctl pots, so I rotated the dial and got my local station about where it should be on the dial (goes towards the antenna coil rewind). So, now I know that radio
1) works
2) needs those caps in the can changed.
I decided, given the thickness of the tabs and the effor it will take to unbend, remove trhe can and then empty it and so on, to simply keep cutting the wires one by one, trace them and replace the caps outside the can. It goes against my own rules, but then the effort should be commensurate with the desire to keep that particular radio authentic, and, well, this is not one of my bucket list ones, plus some caps could not be restuffed anyway due to the way they were, so I allowed unadultarated yellow axials to live under the chassis, no cosplay.
So both good and...neutral news. I did not expect the old cap[s to be ideal, it was just when I measured the capacitance it was right on the money with the 10uF filter cap and so I thought, what if....well, OK, the "if" did not materialize.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.