It really looks like the problem lies elsewhere, since bias
voltage is correct in both conditions.
If the capsule was leaky you would have significantly different
readings.
Le 31/10/2024 à 11:08, Heinz a écrit?:
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On Wed, Oct 30, 2024 at 11:04 PM, Arjay1949 wrote:
If you measure the voltage at each end of the 4704
resistor (with reference to ground) it should remain the
same.? That is around 68v at the left hand end (viewing your
photo) and c.50v at the right hand end (assuming the meter
impedacnce of around 10M).
If that latter figure rises between not working on first
switch on, and the mic finally working, then that capacitor
is likely the cause of your problem.
?
?
Hi!
?
I measured? the voltage at each end of the 4704 resistor
and the capsule voltage in the working and non working state
(viewing from the photo).
?
When the NT1-a is in the warm-up phase (not working).
Capsules voltage: 10.1
Left hand end: 69.0V
Right hand end: 12.8V
?
When the NT1-a is working.
Capsules voltage: 10.2
Left hand end: 69.1V
Right hand end: 12.9V
?
Does it mean, that the capsule itself may be the culprit?
??
