Help for understanding a Chinese U87 fake microphone schematics

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Sorry !

Q2: B=1V; E=359mV; C=9.58V

Q3: B=18.75V; E=19.41V; C=9.58V

Q4: S=9.59V; G=18.75V; D=10.14V

Q5: S=141mV; G=9.59V; D=10.14V

This time it's ok, I forgot to update 🙃
 
This hurts my head. Floating bases and gates make no sense. Does this even work?
The capsule, if it's just a capsule with nothing can't drive the sources or drains on the 2N5457s.
Look up the basing on the transistors, check and double check that.

I suggest you start over with this schematic and draw this so the signal travels left to right, which is the usual convention.

Good luck. Over and out.
 
@Mr. Moscode : If you have a headache, take paracetamol 😉

-Yes, it works. Did you read the whole post?

As mentioned, I am not an electronics "specialist". It is precisely people like you who can help me. Thanks in advance.
I know my schematic is terrible, I've spent several hours on it already. I don't claim to be a schematic drawing champion, I do what I can... 😅
 

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