Moog Music Forum

Thanks thealien666
I'll recommend your idea to my lab
I'll post the news soon

Not all these chips were replaced in this case but most of them did. There are some of them which has been replaced few months ago on different problems- when the first ossiclator died, and when another problem of a non stoping LFO bias.

The lab has the schematics from moog. But they also told me ...

If it is just the Volume envelope causing you problems then get your guy to check the operation of U7. If it is the Filter envelope check the operation of U29.

One word of warning when getting devices off this board is that it is multilayered so be very careful not to damage the plating in the ...

Some update about the situation:

the lab couldnt piont the source of the problem and we suggested that it could be one of the switches.
so all these switches been replaced:

U37. U39. U73. U51. U36. U28. U29.U32. U7. U24, U55

unfortunately, the problem still exist. the filter still creates this ...

Hi
So my voyager is in the lab and the problem isn't solved yet :(
We can't find the source for it but still trying

I wonder if anybody knows where can I get 3.4 OS
I would like to get back to this version.maybe it will fix the problem.
I do not remember this happening before I made an upgrade to ...

Did you try a master reset? It may very well be pot papping, but I don't think that the filter env is a destination. There are a limited number of options with pot mapping.

I made the mapping reset if that's what you mean. When the 3.5 OS Released I updated the synth too. Is there any other reset ...

Hi thealien666,
I made a mapping reset and the problem still exist. You described it better then me- the filter envelope actually looping! And should not behave like that.

Can you please explain me what are the CMOS logic gate in the envelope circuits? So I can focus my tech engeenir who trying to ...

I realized something interesting
After playing a new voyager at the store.
I think somehowon my voyager, the Vol Env and the Filter Env connected together.
In the new synth I tried at store, they act seprately.

On my voyager, when the vol attack is high and the filter attack is low, the ...

Eventually after talking with moog I have decide to take the synth to the lab. Before that I reset all the mapping and factory reset but that problem won't go.
Thank you all for your replies
I'll post later what was the problem and how it has been fixed.

Levi

Thank you all for your replies.
I know that the filter can create aself ocsilation and about the option to get the Env control it theough the lfo bias. But that is not the issue. All the bias are closed. The lfo rate can be set anywhere and steel the filter create weird modulation in some conditions ...

Hello
I have a weird problem in my Voyager synth. the filter creates this really weird lfo to the wave. It sounds like there is some modulation going on. I closed any other parameteres such the LFO's and check all the OSC. its coming from the filter ENV. and its change the frequency with the ATTACK ...