- May 17, 2020
Ok here's what I got. With tube installed:Excellent. Now when it's up and operating, can you measure:
a) both sides of R11 (the 499K)
b) both sides of R15 (the 499K)
c) the voltage at the tube grid (either pin2 or pin7 of the tube)
Then yank the tube, and remeasure a) and b) above (again, while it's powered up).
Can you also confirm what type of voltmeter you are using?
R11: -1V / -0.8V
R15: -0.77V / -0.85V
With tube removed:
R11: -0.6V / -0.48V
R15: -0.4V / -0.47V
And here is the voltmeter I'm using: Amazon.com. DT830D. Thanks!