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<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=686400517-05082002>Hi
DIY,</SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN
class=686400517-05082002></SPAN></FONT> </DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=686400517-05082002>Here's
one for y'all - a few days ago I took a risk with my financial situation (and my
wife's opinion of my spending habits) and got a minimoog. It's been very well
preserved and is completely stock. It's an intermediate model with the
middle-version VCO card (not the oldest, not the latest), black plastic
faceplate, and smooth white wheels. It's working great and nicely tuned up. I am
working on convincing my wife that minimoogs are cool and it's OK to collect
them - this worked with Mellotrons, she likes those. I suppose one angle I can
try is that minimoogs fit perfectly on top of M400's. :)</SPAN></FONT></DIV>
<DIV><FONT size=2></FONT> </DIV>
<DIV><FONT size=2><SPAN class=686400517-05082002><FONT color=#0000ff
face=Arial>There is a minor problem - you can hear the VCO's all the time, very
quietly, on the output. It's not a bad problem, but it ain't supposed to do
that. I've not yet done anything other than pop the back off to do a physical
exam. But as long as I'm stuck here at work unable to get the scope out, I
thought I'd throw this out on the list to see if others have seen this
before.</FONT></SPAN></FONT></DIV>
<DIV><FONT size=2><SPAN class=686400517-05082002></SPAN></FONT> </DIV>
<DIV><SPAN class=686400517-05082002></SPAN><FONT size=2><SPAN
class=686400517-05082002><FONT color=#0000ff face=Arial>Here's what I've
discovered so far:</FONT></SPAN></FONT></DIV>
<DIV><FONT size=2><SPAN class=686400517-05082002></SPAN></FONT> </DIV>
<DIV><SPAN class=686400517-05082002></SPAN><FONT size=2><SPAN
class=686400517-05082002><FONT color=#0000ff face=Arial>It's coming out of the
main output and the headphone output.</FONT></SPAN></FONT></DIV>
<DIV><FONT size=2><SPAN class=686400517-05082002><FONT color=#0000ff
face=Arial>It's unfiltered (raw VCO mix)</FONT></SPAN></FONT></DIV>
<DIV><SPAN class=686400517-05082002></SPAN><FONT size=2><SPAN
class=686400517-05082002><FONT color=#0000ff face=Arial>It does not go away when
the mixer switches are all off</FONT></SPAN></FONT></DIV>
<DIV><FONT color=#0000ff face=Arial size=2><SPAN class=686400517-05082002>All 3
VCO's are bleeding through</SPAN></FONT></DIV>
<DIV><FONT size=2><SPAN class=686400517-05082002></SPAN></FONT> </DIV>
<DIV><FONT size=2><SPAN class=686400517-05082002><FONT color=#0000ff
face=Arial>This rules out misadjusted balance trimpots on the VCA's. I don't
think there's a trimmer that will solve this problem. Just tossing it around in
my head I am thinking that there may be a ground connection that's opened
up. Probably the first thing I'll do is get the scope out and probe all of the
pins along the bottom of the VCF/VCA card, ac coupled, high gain, to see
where the signal is coming from. I'll let you know what I
find!!</FONT></SPAN><BR><BR>- Gene<BR><BR></FONT></DIV></BODY></HTML>