Home Forums GuitarPCB Build Support Dr Phybes Wilkie mod (solved) Reply To: Dr Phybes Wilkie mod (solved)


Thanks again.  Checked and no ground circuits around the correct sides of R20.  Perfect sound with audio probe at pin 6 of IC1.  I also tugged all the wires to see if I could get disconnection and no go.  If I strum hard then the higher level signal kicks in whatever’s not working and it works.  Then a second later as the strum dies down there’s a step change down.

I’ve pulled out Q5 and will pick a new one up from Jaycar this afternoon and socket it to eliminate this.

On the 45 setting the pedal is perfectly usable as a phaser, sounds great with no noise.  Just odd it’s a no go on 90!  For another $2 might get another TL074 as well – I’m assuming you couldn’t have a partially faulty IC?