Hi Florian

I might of lost something in translation here. This is what I
measuring...

I am referenceing the 2044 datasheet here:
http://www.synthdiy.com/show/ id=86

Setting the multimeter to DC and a range of 20v this is what I have

2044
pin 16 +V = +15
pin 15 SIG IN- = -0.09
pin 1 SIG IN+ = -0.06
pin 9 -V = -15
pin 13 freq ctrl = -0.10 filter knob fully open
= 0.09 filter knob fully closed


Two things confuse me here... the voltage for the signal seems very
low.. and also the Fc ctrl voltage seems low, and yet it responds
correctly to Fc knob, envelope etc.

Looking at the specs, the range is supposed to be 0.6 to 1.5.

However, I don't really know what I'm talking about here. Do you know
:)))

thanks again
pot.

--- In korg_mono-poly@yahoogroups.com , Florian Anwander
<fanwander@...> wrote:

>
> Hi Simon
>
> > But no signal at Pin 3 (output) of the 2044 - totally dead - with the
> > controls set right. [...]
> > Seems like the silence at 2044 pin 3 points to a dead filter chip, do
> > you think
> Now, still there is a little hope for the 2044. Check the voltage at

pin

> 15 (offset) and pin 13. If it would be -15 Volts, then the VCF would
> shut down completely and no other CV would help.
>
> But in fact I fear a dead 2044 too.
>
> > There are some 2044's on ebay, though some of the other numbers on the
> > top are different. Do you think that matters
> No. Single SSMs are available from Senso ( http://www.vintageplanet.nl/)
> for around 17 Euros. The seller "technologytransplant" on ebay sells
> good ones as sixpack for 55 Euros!
>
> Florian
>