LA6NCA RADIO PAGE

R-390A/URR







I have just received this R390A.
It did not work.
I measured all voltages and found that the transformer was burnt.
I have disassembled it from the radio here.




I open the transformer with a chisel.




I use a hot air to get out of the defective transformer. .





Here the transformer box is empty.



I plug in the three voltages used by the radio.
6.3VDC heater voltage, 5A, 31.5 W
25.2VDC heater voltage, ??A, ?? W
240 VDC anode voltage, 150mA, 36 W

Total power: 66 Watt

Everything worked just fine.








 

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