Re: Maxon Phasetone - Alex need your help!

Posted by MAO on
URL: http://guitar-fx-layouts.238.s1.nabble.com/Maxon-Phase-Tone-tp34814p34849.html

Good point on Q5 (TR1), I didn't check the datasheet for those...it was a late night.

I do have some 2n3906s in that hfe range.

If going with a daughterboard for the switching, I'd remove the 47n (C11) on the right edge of the board and tap into the top and bottom of where that cap was.

Referring to the schematic. the switching board would start with C11 and end with the source of Q5 & R29. And would "plug" into the main pcb at the removed 47n (C11).  Would have to tap into vbias too, which is the next row down.  

Maybe expand the LED PCB to do both? Should be plenty of room to tuck it under the main pcb since there is only 1 knob.  

Guess I know what I'll be doing tonight...