Re: Maxon Phasetone - Alex need your help!

Posted by MAO on
URL: http://guitar-fx-layouts.238.s1.nabble.com/Maxon-Phase-Tone-tp34814p34879.html

12/15/2016 Note - These JFET and LFO readings are not valid. I will post the corrected readings once I have the lower trimmer sorted out. That trimmer doesn;tseem to be doing anything at the moment.  

Good new..bad news...

Fired right up, passes sound, however the phasing is extremely weak.

No time to troubleshoot tonight, but here are the voltages.

Speed maxed, Trimmers dead center

jfets (matched 2N5457)
G= varies 4.58 - 4.64, S=4.77 and D=4.77 (Gate voltage is affected by either trimmer)

lfo
pin 7 4.9 - 6.36
pin 6 4.97 - 5.04
pin 5 4.99-5.09

Non LFO ICs
pins 1,2,3,5,6,7 4.78

VCC 9.01V
VB 4.51


Going to try J201s tomorrow.