Home Forums GuitarPCB Build Support Apollo problem (solved) Reply To: Apollo problem (solved)


I apologize.  I hastily thought that  the switch with the green wires was SW2.  My mistake.

I am still asking if you have a varying voltage at the anode terminal of the NSL-32.  That will also indicate that SW2 is wired correctly and is in the correct position. That is required for the optocoupler to function.  I cannot clearly see from the photo where the colored dot on the NSL-32 is located.  It needs to be soldered to the cathode (-) pad on  the right   You have confirmed that the LFO is oscillating so that is good news.