Help me diagnose my oktava 012

[jakromm]

Hi guys, I did a dorsey mod a while ago, I recently noticed I'm getting a humming in the one mic, what part do you think would be causing this (resistor, capacitor?) I can upload an audio clip if it helps.

[jakromm]

Originally Posted by bdasilva

Make sure you clean all the flux residue on the board... A little flux looks like another gigaohm path in the circuit.
As youve already figured out... That is a pretty fragile board... I had one I had to put liquid flux on the board and re-tined all the traces and connections.
Ive done 10 sets or so... I'd take a look at it for Karma and postage if it comes to that. Brian

Should I just go and take all the parts off, spray the flux remover over the bored and parts, resolder everything back on, then spray the flux remover on everything again? I threw away my flux remover a while ago so I'll have to buy some more :(

www.apianist.com/noise.mp3

^ audio of it if that helps, its on the right channel, it was with 60db of gain.

[jakromm]

Originally Posted by bdasilva

I use acitone and a qtip... use the qtip to clean the pcb on both sides... Use a magnifying glass to look at the solder quality and at the place there the runs and the pads come together. Good luck. (offer still stands)

I might go ahead with that, the main reason being I used my old roommates tools to do the job, but now he lives hours away. Arranging to borrow his stuff would be a huge pain in the rear. Want to send me a private message with your address? (i don't even have a small screw driver to take a look inside!)