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The variable resitor at r26 was broken off, but I don't think that should be the cause of the not so wah effect. I jumpered it to make sure. The vactrol is only moving a few mV, ten at most on one of the pins close to the pot. The two pins read 17 and 15 ish, and the three pins are steady at 9v...

Hey there. I have an old q tron plus that isn't filtering the way it should. Im using the EHX adaptor, and all IC voltages are reading fine (18/9v). There aren't any shorted diodes since the power supply section seems to be reading normally, theres a healthy 9v reading throughout the circuit...