Carlos,
Sorry for your stereo trouble.
First of all let me ask, when your VPM-1 kit came in the mail it should have had 2 pairs of LDRs in the stereo kit bag…did it also have one extra pair in the VPM-1 main kit? If so, which 2 of the 3 pairs did you use? We accidentally sent out 3 pairs of LDRs a few times, which can be confusing.
Second, did you make sure to change all 7 jumpers when running the stereo setup routine?
Third, it would help if I can see a picture of the plastic zip lock bags that the stereo LDRs came in. It would help for me to see how the numbers were written on the bags to know what generation of test LDRs were sorted. Could you please send me a photo of them to this address?:
info “at” zeppelindesignlabs “dot” com
Forth, it might be good to add some sticky tack (poster putty) on the ends of the optocouplers just to ensure they are really sealed. Sometimes if the holes are too big nail polish won’t seal them. Make sure you run the stereo setup routine again after you do that.
-Brach