[sdiy] Differences between MG-1 filters and broken stuff

[harrybissell]

Japanese say "O yasu minasai"

(go now - take your rest)

you will be surprised how stupid people get when tired. I blow up
my best sh!t late at night.

In the morning I suddenly become a genius again....

H^) harry

Metrophage wrote:

> Here's another difference: most Rogue filters work, but since I
> replaced the pots in the MG-1, this filter no longer works!
>
> I love it when an apparently simple repair turns into a complete
> debacle. Before, the MG-1 ran at a very quiet volume, but with no sync
> switch, and extremely crackly sliders. I replaced all of the sliders
> with appropriate values and installed the switch yesterday. Today the
> board looked clean and dry, so I started to connect everything again
> for bench frenzy. No smoke when I turn it on... the LFO indicator
> blinks, but no sound. I went ahead and removed R102 which does result
> in the synth being a bit audible, but it's even quieter than it was
> before when I had initially gotten it "working"!
>
> The new pots do feel great. The pads are all intact, I made certain
> that there are no broken traces from my removal of the old sliders.
> What works? The VCOs, LFO, envelope, VCA, noise, ringmod, top-octave
> chip. I guess that leaves the VCF section. Resonance does whistle at
> higher settings, but I do not hear any filter action. The volume is so
> minute that I am not sure I'd hear lowpass filtering anyway.
>
> More tomorrow, must pass out!
>
>
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