Unknow PCB!

CrewJones00 · Post by **CrewJones00** » 14 May 2013, 14:15

Here is the board! Anyone have any idea what this is? Thanks!

~arph · Post by **~arph** » 14 May 2013, 14:53

Mmm.. it says OD-02 so perhaps a Maxon OD-02? how many pots does it have?

CrewJones00 · Post by **CrewJones00** » 14 May 2013, 15:05

Thank you for responding! The orange, red and purple group of wires goes to one pot. It has input and output wired up as well as the battery clip. The brown and purple go to nothing and the brown and black near the top (notched pcb side) also nothing. I would assume one is for the switch and one for another pot? There are also those three holes in the board next to the orange, red and purple group that I suspect could be another pot.

The op am is NEC Japan C4558C 428L

This was found in a box of NOS Boss boards and I thought it was maybe a Boss Overdrive version however it looks like that is not the case.

tube-exorcist · Post by **tube-exorcist** » 14 May 2013, 16:52

Its probably from such a pedal:
http://www.effectsdatabase.com/model/co ... stem/dc851

CrewJones00 wrote: The orange, red and purple group of wires goes to one pot.

Thats the level (volume) pot.

CrewJones00 wrote: It has input and output wired up as well as the battery clip.

Input is the yellow screened wire, output the green one.

CrewJones00 wrote: The brown and purple go to nothing...

Here you should connect a 500k log pot for Drive (Gain).

CrewJones00 wrote: ...and the brown and black near the top (notched pcb side) also nothing.

Here you connect a pushbutton for bypassing.

CrewJones00 · Post by **CrewJones00** » 14 May 2013, 17:12

Thank you so much! I'll give that a shot and see what comes out of the thing!