Ocanaut Not Working

TCHarley

New member
Hi guys,

I was hoping I could get some help troubleshooting my ocatnaut build. It is really fuzzy and the volume jumps around like crazy. I am not really sure where to begin. Any ideas? Here is a quick recording, first with the pedal off, then on with both pots open all the way.


My apologies. I know this isn't much to go on.
 
Post some pictures. Make sure your transistors are oriented correctly and soldered properly (or seated in their sockets well if you went that route).
Here is a picture. I unfortunately bought resistors that were too large so I had to fit everything in real tight, but I don't see anything touching and there are no solder bridges as far as I see.
 

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Oh wow you are right. I took it out and put a new 47 uF cap in its place in the proper orientation. The pedal is a little more consistent now but unfortunately still sounds bad, like a bad fuzz pedal.
Have you adjusted the Trimmers for the 4 - BS170 Transistors?
Using a DMM, Set for DC Voltage, Black Probe to Enclosure or Ground.
Red Probe to Drain of BS170, They should be around 4.5v to 5v
Pot 1 adjust Q1
Pot 3 adjust Q3
Pot 4 adjust Q4
Pot 6 adjust Q6
 
Have you adjusted the Trimmers for the 4 - BS170 Transistors?
Using a DMM, Set for DC Voltage, Black Probe to Enclosure or Ground.
Red Probe to Drain of BS170, They should be around 4.5v to 5v
Pot 1 adjust Q1
Pot 3 adjust Q3
Pot 4 adjust Q4
Pot 6 adjust Q6
I just checked them all and they all range from 7 to 8.5 v when turning the trim pots.
 
Something is wrong, you should be able to dial down to 1v, Are the trimmers 5K
They should be, I ordered these ones from digikey


Maybe they sent the wrong ones? I haven't actually checked them yet
 
They should be, I ordered these ones from digikey


Maybe they sent the wrong ones? I haven't actually checked them yet
Should have 502 stamp on side
 
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