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Re: Troubleshooting help please?

Posted: Fri Sep 27, 2019 4:17 pm
by Bg
re-iterating previous posts. Check you've fully cut the tracks and check you've not shorted between them. They are the most common issues with veroboard. And make sure you cut the ones under the two resistors.

Re: Troubleshooting help please?

Posted: Fri Sep 27, 2019 7:18 pm
by Snarblinge
What transistors did you use? Could be bias issue.

Re: Troubleshooting help please?

Posted: Mon Sep 30, 2019 9:10 am
by Jay
Add Fuzz Control Pot....
Fuzz CD & VB.JPG
Fuzz CD & VB.JPG (148 KiB) Viewed 4573 times

Re: Troubleshooting help please?

Posted: Mon Sep 30, 2019 9:38 am
by calling card
If it were me I'd have fucked up the transistor legs, this also why I don't make these things. Except if push comes to shove.

Re: Troubleshooting help please?

Posted: Mon Sep 30, 2019 10:44 am
by Shimmer
I'd check the transistor pins.
Can be hella confusing even for similarly named transistors....
http://www.analogzoo.com/2015/03/beware-the-p2n222a/

Re: Troubleshooting help please?

Posted: Mon Sep 30, 2019 1:26 pm
by NippleWrestler
Problem solved.

The circuit was fine. Everything was wired fine except for c3. The diagram says to omit this part, and then in the comments the designer said that omitted parts need to have a jumper in their place. Jvpp snipped the jumper and there's the sound.

'Easy' as that.

Now what I have is a fuzz with massive volume and massive treble. Too much on both fronts so I soldered a cap between lugs 1 and 2 of the pot to roll off the nastiness and ran a resistor in series from lug 3 to the switch. Now it's more where it should be and has gone from being a thermonuclear device of raspy buzz to something slightly more tamed.

It's a fun world this pedal building. It almost makes it worth the burned fingers.

Re: Troubleshooting help please?

Posted: Mon Sep 30, 2019 4:47 pm
by Bg
NippleWrestler wrote:Problem solved.

The circuit was fine. Everything was wired fine except for c3. The diagram says to omit this part, and then in the comments the designer said that omitted parts need to have a jumper in their place. Jvpp snipped the jumper and there's the sound.

'Easy' as that.

Now what I have is a fuzz with massive volume and massive treble. Too much on both fronts so I soldered a cap between lugs 1 and 2 of the pot to roll off the nastiness and ran a resistor in series from lug 3 to the switch. Now it's more where it should be and has gone from being a thermonuclear device of raspy buzz to something slightly more tamed.

It's a fun world this pedal building. It almost makes it worth the burned fingers.
Yay simple as that :)

Re: Troubleshooting help please?

Posted: Tue Oct 01, 2019 1:05 pm
by NippleWrestler
Fuzzboy lives.

Image

This is the ritual fuzz circuit. It's crazy. Unity gain was at about 2 on the dial and from then on it gets insanely bright and insanely loud. You'd have zero trouble standing out in the mix but it literally hurts your ears when you're playing.

The only pot is volume. No gain control. It's always on and you're just attenuating, yet more treble comes in as you dial up.

It was too much.

I soldered a .047uf cap over lugs 1 and 2 of the pot which lowered the volume by about 60%, removed a lot of nasty treble and a great deal of ugly hiss.

Now it's basically a massively thick boost pedal which absolutely rocks on a drive channel at almost breakup. This way there's a clean with the volume back, then a bit of a chunky drive with the volume on and then this weird sludge thing with the pedal on. I've no idea what's happening electronically but it's great fun.

Image

The enclosure is from a pedal I almost made in 2009. I don't have the screws for it so masking tape is the next best thing. The lid is covered in electrical tape to prevent anything shorting out.

It works. It's ugly in a beautiful way.

Well worth the dicking around.

Re: Troubleshooting help please?

Posted: Sat Oct 05, 2019 9:12 pm
by Snarblinge
looks badass, well done.

what you building next?

(also, i now have a specific spot for enclosure screws, i write the enclosure number on the little plastic bag and chuck it in the thing, then at boxing time I know where they are. I have lost them before)

Re: Troubleshooting help please?

Posted: Sun Oct 06, 2019 6:58 am
by chur
NippleWrestler wrote:It's a fun world this pedal building. It almost makes it worth the burned fingers.
iron.jpg
iron.jpg (95.7 KiB) Viewed 4401 times

Re: Troubleshooting help please?

Posted: Sun Oct 06, 2019 7:49 am
by NippleWrestler
Snarblinge wrote:looks badass, well done.

what you building next?

(also, i now have a specific spot for enclosure screws, i write the enclosure number on the little plastic bag and chuck it in the thing, then at boxing time I know where they are. I have lost them before)
There's a noise gate coming, then a Hyperion 2, then an eqd cloven hoof.