06-18-2017, 11:09 PM
I'm finally back after getting sidetracked by work and vacation.The new tube came, so I figured I'd run these tests; results are below:
80 filament voltage: 5.4v
71A filament voltages: 5.5v
27 filament voltage: 2.7v
24 filament voltages: 2.7v
These above look more or less ok from the charts.
Plate voltage test for 80 (#6 from list): I got 364 at pin 2 and 366 at pin 3. (I think I may have done this test wrong, I'm thinking I was supposed to probe pins 2 and 3 together like in the filament voltage test rather than place - probe to chassis and + probe to pin 2 or 3... if so let me know and I'll re-do)
The B+ test at tube 80 (#7 from the list) gave me 272v.
Plate voltages (#8)
27: 101 (chart says should be 120)
24: 215, 215, and 95 (chart says they should be 250, 250 and 35)
71A: 203 and 217 (chart says they should be 215)
Any thoughts?
80 filament voltage: 5.4v
71A filament voltages: 5.5v
27 filament voltage: 2.7v
24 filament voltages: 2.7v
These above look more or less ok from the charts.
Plate voltage test for 80 (#6 from list): I got 364 at pin 2 and 366 at pin 3. (I think I may have done this test wrong, I'm thinking I was supposed to probe pins 2 and 3 together like in the filament voltage test rather than place - probe to chassis and + probe to pin 2 or 3... if so let me know and I'll re-do)
The B+ test at tube 80 (#7 from the list) gave me 272v.
Plate voltages (#8)
27: 101 (chart says should be 120)
24: 215, 215, and 95 (chart says they should be 250, 250 and 35)
71A: 203 and 217 (chart says they should be 215)
Any thoughts?
Greg
"We are here to laugh at the odds and live our lives so well that Death will tremble to take us."