[sdiy] Help trouble shooting mfos echo rockit

[JoeF]

Hello all, not sure if this is the right place to ask for guidance but, I'll try. I have put together an Echo Rockit I got as a kit. And, of course I need to troubleshoot.
This is an oscillator and external input into a VCF into a PT2399 delay. I am getting no sound at the output and I believe it is because the VCF is not functioning. I have audio traced a signal to the VCF from the input and the internal oscillator. And, I have jumped the signals around the VCF straight to the delay and then I get output and have verified the delay is operating as expected. I have correct power to all IC power pins. The transistors are getting power on their source pins.The IC in the VCF is an 13600D which I have spares of and have swapped to no avail. I have re-soldered the components in the VCF circuit. I don't have extras of the MPF102 transistors and am questioning whether I burned them up when I soldered them in? What do you think?
What's next? Thanks for any advice in advance. JoeF.

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