Blunderof the Week

[Winky Dink]

Well, I've finished replacing components, I have the tubes, and I'm almost ready to power up this set. The project is coming down to the wire (pun intended). My last issue is the line cord/resistor combo represented in this part of the schematic.



I couldn't figure out where the 566 ohm resistance was until I started to autopsy the line cord.



The resistance wire, roughly 25 feet, taps into the line cord near the plug end and emerges as a third conductor inside the chassis. I suppose this is the equivalent of a wire-wound resistor to get the rectifier's heater voltage down to about 35V.

I don't want to use this line cord because the insulation is so brittle that it cracks and falls off when it bends. My question is, can I replace the 566 ohm resistance with 566 ohms between the plate pin and the heater? And if that's a good plan, then what power rating would I need? By chance, I have a couple of 560 ohm 7W resistors.