04-06-2016, 10:47 PM
Well...I decided not to do the reconstruction to bring the chassis in full agreement with the sch, considering some discrepancies seem to come from factory.
There are some problems after I soldered all that was not and weeded out tubes that were plain bad.
1. Voltages rise VERY slow. The voltage at the output xfmr first gets negative (!!! ) -10-12V or so, and only then starts going back. It lags the voltage for the field coil quite a bit though evntually becomes the same, 110V or so. It gakes 3 minutes maybe for the radio to get to hum.
I first thought of the diode that is dual one and creates two separately rectified voltages for the output and for the field coil, and indeed one half did not work so I replaced it.
2. Potential problem with the output 43 tube, though seems to work.
3. I am receiving a station, pretty loud, though at lower than max volume reception cuts out. Need to clean the volume pot.
4. But while the radio is quiet while not receiving it hums and distorts when is.
I suspect the radio is misaligned. Need to find the alignment procedure (don't remember if it is in the manual I have from the Radiomuseum.
Oh...and I am using a cap to lower the voltage, 8.2uF.
There are some problems after I soldered all that was not and weeded out tubes that were plain bad.
1. Voltages rise VERY slow. The voltage at the output xfmr first gets negative (!!! ) -10-12V or so, and only then starts going back. It lags the voltage for the field coil quite a bit though evntually becomes the same, 110V or so. It gakes 3 minutes maybe for the radio to get to hum.
I first thought of the diode that is dual one and creates two separately rectified voltages for the output and for the field coil, and indeed one half did not work so I replaced it.
2. Potential problem with the output 43 tube, though seems to work.
3. I am receiving a station, pretty loud, though at lower than max volume reception cuts out. Need to clean the volume pot.
4. But while the radio is quiet while not receiving it hums and distorts when is.
I suspect the radio is misaligned. Need to find the alignment procedure (don't remember if it is in the manual I have from the Radiomuseum.
Oh...and I am using a cap to lower the voltage, 8.2uF.
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.
