JamieOxford
Active member
- Joined
- May 7, 2017
- Messages
- 28
Hello, I'm looking for some help repairing a FET47 Clone.
This mic was dropped and the capsule replaced and while the mic outputs sound, there are regular pops from the circuit every 10 seconds or so.
I noticed that wiggling R1/C1 was causing pops to occur more regularly, so have replaced those along with C2 & C3, which has reduced the amount of popping but also muted the output of the capsule (I think due to low polarisation voltage - it seems to only be getting a few volts). I've traced a voltage drop to T3/R9 and a transient pop (negative voltage) to R9/T5 but I'm not sure what could be causing these as the circuit is very interconnected.
Can anyone help with suggestions of what the cause of these pops might be? (I've attached the original FET47 schematic which is almost identical)
Thanks!
This mic was dropped and the capsule replaced and while the mic outputs sound, there are regular pops from the circuit every 10 seconds or so.
I noticed that wiggling R1/C1 was causing pops to occur more regularly, so have replaced those along with C2 & C3, which has reduced the amount of popping but also muted the output of the capsule (I think due to low polarisation voltage - it seems to only be getting a few volts). I've traced a voltage drop to T3/R9 and a transient pop (negative voltage) to R9/T5 but I'm not sure what could be causing these as the circuit is very interconnected.
Can anyone help with suggestions of what the cause of these pops might be? (I've attached the original FET47 schematic which is almost identical)
Thanks!
