in conclusion... everything I've measured is OK, every wire I followed was OK, components changed for new ones, tube socket as well, new tube, etc
nevertheless:
- i do not hear a change if I lift the 820R
- measuring with the scope there's nothing strange going on when poking the board and components with the wooden stick
- however, there is a big effect when i place the multimeter (video and explanation on post #174)
I am wondering if there's anything I could measure with the scope, and by that I mean that if the circuit is supposed to invert the signal by 180 deg then I should be able to place the scope's probe somewhere in which I see a SINE wave and then disconnecting something (say the 820R) I should see that SINE wave flipping 180 degrees. Is that right?
nevertheless:
- i do not hear a change if I lift the 820R
- measuring with the scope there's nothing strange going on when poking the board and components with the wooden stick
- however, there is a big effect when i place the multimeter (video and explanation on post #174)
I am wondering if there's anything I could measure with the scope, and by that I mean that if the circuit is supposed to invert the signal by 180 deg then I should be able to place the scope's probe somewhere in which I see a SINE wave and then disconnecting something (say the 820R) I should see that SINE wave flipping 180 degrees. Is that right?
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