Elektor Formant Modular

The VCO needs only one +and -15 v supply. There are more pins because of the complicated board lay out.  These can be connected if necessary .
But the +5 v  should be just +5 v and not +15. Unless some components have been exchanged.
Good chance that the original components were blown up by those 10 extra volts.

In the files section you may find the original schematics as well as some modernisations.

If you know how it is constructed, you can test different parts of the vco to see what is and isn't working.

good luck
Gerard


>greetings - -
>
>im having trouble getting the old VCO to make any sound.
>
>i noticed that there are 2 sets of power supply inputs on the back of the boards. on some of the modules i have these two have been linked together with cables on the boards them selves.  is this kosher, or does it really need a doubled up supply.
>
>also the +5v had been soldered to the +15v bus board. 
>
>is there a better way to do this? other things to try?
>
>dont feel bad about suggesting any obvious things i might be missing. .  theres a good chance thats the case!!   im learning!
>
>thanks,
>brendan
>
>
>
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