As was suggested I done some kits before getting my xoxbox, however have now made a start on it and have been doing fine up until a problem with my VCO.
Basically the last test measurement I am able to successfully take is the step below on the instructions (obviously all previous measurments where successfull):
"Verify the op-amp is working. Test the DC voltage as shown on pin #7 of the chip.
It should be the same as the control voltage in the previous step, 3V "http://www.ladyada.net/make/x0xb0x/fab/vco.html
The next steps ask you to attach an oscilliscope (which I don't have) however it then says:
"If you don't have a scope, you should at least measure the DC bias, which is about 8.5VDC"
This step measuring R105 with my multimeter set to dc produces 0v when I am expecting something close to 8.5v.
I have spent a ridiclious amount of time checking each compent and for the life of me sware that I have the components of the VCO correct, therefore I then tried resoldering asmany conections as my sanity could handle and essentially I am in the exact same situation - no further forward (or back thankfully)
I am seriously starting to wonder if its a pcb fault or a failed component, however I'm hoping someone with experience could help me narrow down where the faut must lie given the step that im having trouble with.
I also tried using some headphones into r62 to hear the saw wave as per instructions but obviously that is not producing a result at all either.
Thanks if you can help at all!