Help Troubleshooting Sunflower Fuzz

[snowwis]

Hello all. I built this sunflower fuzz and I’m only getting clean sound when bypassed. The led isn’t lighting up either. I reflowed the joints. Tested continuity between leads and points on the board. I’m getting 9volts on the pads where the power jack connects. I’m also getting 9volts when I test pins 1 and 8 on the 1044.

the

https://www.reddit.com/r/diypedals/comments/10irc14

I asked in the diypeals subreddit and someone said it’s because of the 109’s I’m using. That person suggested I replace them with with AC128’s or 2N527’s. Does any know a good reputable source for 2 of these? Will it fix my audio problem? I linked the diypedals discussion for reference. I would appreciate any help or insight anyone might have. Thanks

 

[Harry Klippton]

Bc109 are NPN and the sunflower is meant to use PNP transistors. The npns could work if the electrolytic capacitors are oriented correctly and omit the charge pump

 

[Harry Klippton]

Additionally, you don't specifically need AC128 or 2N527, but any PNP transistors will do, preferably with the preferred gain and leakage. Small Bear used to sell sets but I'm not sure off hand if they still do

 

[Mcknib]

If your in Europe I'm in Scotland I don't mind sending you a couple think I had around 400 last time I looked so I can spare a couple with the right hFE and leakage

I saw yer Reddit post I'm on there now and again

 

[snowwis]

If your in Europe I'm in Scotland I don't mind sending you a couple think I had around 400 last time I looked so I can spare a couple with the right hFE and leakage

I saw yer Reddit post I'm on there now and again

Thanks a ton @Mcknib. I really appreciate the offer but unfortunately I’m in the U.S. (Tennessee).

 

[snowwis]

Additionally, you don't specifically need AC128 or 2N527, but any PNP transistors will do, preferably with the preferred gain and leakage. Small Bear used to sell sets but I'm not sure off hand if they still do

Gotcha. Thanks for the advice. How do I determine the preferred gain and leakage? Thanks

 

[Big Monk]

I think your best bet here is to simply adapt the circuit for NPN.

1.) Remove the Charge Pump and Jump 5 and 8.
2.) Rotate C6, C1, C2

Since you were using a charge pump, the DC wiring is already correct.

 

[snowwis]

I think your best bet here is to simply adapt the circuit for NPN.

1.) Remove the Charge Pump and Jump 5 and 8.
2.) Rotate C6, C1, C2

Since you were using a charge pump, the DC wiring is already correct.

@Big Monk I like it. Thanks for the info. I’ll give it a go.