I measure 38v and 79v at the pattern selection switch output on the cardioid and figure of eight respectively. That seems pretty close.I also measured the pins where the capsule connects to the amplifier (with capsule in place) and on one pin I measure 4v in fig 8, 2v in cardioid and 0v in omni. So the pattern switch IS changing the voltages going to the capsule, but I'm not sure if those voltages I'm seeing are correct? And I'm still not getting any actual change in the polar pattern.I measure 3.9v right at the the heater on the tube.I measure 1.6v at "k" on the tube.121v on the plate.To me, it's looking more and more like the capsule itself? Anyone have one they want to send me to try out?
But if the capsule is "dead", what died? And what can I do about it? I know that Thiersch "reskins", but does anyone "rebuild"?