04-15-2024, 07:30 PM
I started working on the 39-7C I got recently. The link to the schematic is https://philcoradio.com/library/download...20Book.pdf
Overall it looks relatively decent. There is rust on the back of the chassis but most of the chassis is rust free. It has the usual crumbling rubber insulation for this vintage and all the tubes test good except the 6A7. All of the transformers ohm out OK except for the secondary on the antenna transformer. The 5 ohm section between lead 3 & 4 is open. I'm not quite sure what I'm going to do about that.
[Image: https://www.dropbox.com/scl/fi/6i0ljg88d...kieq&raw=1]
[Image: https://www.dropbox.com/scl/fi/06u793mwu...stjl&raw=1]
Overall it looks relatively decent. There is rust on the back of the chassis but most of the chassis is rust free. It has the usual crumbling rubber insulation for this vintage and all the tubes test good except the 6A7. All of the transformers ohm out OK except for the secondary on the antenna transformer. The 5 ohm section between lead 3 & 4 is open. I'm not quite sure what I'm going to do about that.
[Image: https://www.dropbox.com/scl/fi/6i0ljg88d...kieq&raw=1]
[Image: https://www.dropbox.com/scl/fi/06u793mwu...stjl&raw=1]
