I have an Oktava MKL5000 and I've changed the valve several times. I have a further ten on their way from Ukraine that I want to try. Now with this particular mic, the 'skeletal' structure must be tightly screwed to tracks on the main circuit board, but after opening the mic so often, these tracks are worn away. Now I've decided to rebuild the main circuit board.

Heya,

A couple years ago I stupidly bid on a Tascam 80-8 + M30 rig on Ebay. Let's just say the 80-8 was beat by the time it got here. The reel tables were warped and the hubs broken. I should have fussed about that but I did buy it "as-is", so that was a $490 lesson. :(