Oh. Another item....
I found the voltages inside were too high. I presume that is in large part because I replaced the selenium bridge with a silicon bridge.
I put in the normally recommended 100 ohm resistor (mine is 7W). I don't think this tuner draws enough current to drop the voltage enough. I was measuring 218V right after the bridge, The 100 ohm resistor is dropping about 5V, but the diagram shows that the first tap off the power supply is supposed to be 192V. I'm thinking that I should increase the dropping resistor from 100 ohms to about 500 ohms. I can back calculate the right size knowing that the current through the resistor is about 0.05A. I'm going to wait on that until I'm sure that all the heaters are firing on all cylinders and the current draws throughout are where they are supposed to be.
I found the voltages inside were too high. I presume that is in large part because I replaced the selenium bridge with a silicon bridge.
I put in the normally recommended 100 ohm resistor (mine is 7W). I don't think this tuner draws enough current to drop the voltage enough. I was measuring 218V right after the bridge, The 100 ohm resistor is dropping about 5V, but the diagram shows that the first tap off the power supply is supposed to be 192V. I'm thinking that I should increase the dropping resistor from 100 ohms to about 500 ohms. I can back calculate the right size knowing that the current through the resistor is about 0.05A. I'm going to wait on that until I'm sure that all the heaters are firing on all cylinders and the current draws throughout are where they are supposed to be.