Troubleshooting Green Bean

[Gnarcade]

Hey all! This is my first build after 4 years of absence and what I thought was going to happen, happened: I ran into some trouble!

Here are the details as they stand.
(1) Project Name:Green Bean
(2) Description of problem: Buzzing, no sound passing, LED was lit after the first press of the switch, but will not light anymore.
(3) What I've Done so Far (Hopefully correctly):
- Double checked wiring
- Double checked part values
- Looked for bad soldering and potential bridged components
- Sobbed deeply into a cup of coffee while cursing my intellect
- Double checked component orientation
(4) Part Substitutions: I used a different IC chip (One of the ones recommended in the build doc), and a few different diodes. I dont have the exact values on me at the moment, but can post them later.

I have attached a few images... hopefully I did that right as well

Thanks for any help you can provide!!!

[cooder]

Buzzing and no signal, no LED on etc could be a broken ground connection.
Also measure voltages in circuit, doe4s it see 9V, what voltages are on IC?

[alanp]

Do you have any insulation on the back of those pots?

Even just some electrical tape or cardboard will help. If, as I think I see, you don't have any, that means that all the solder joints underneath them are shorting out.

[Gnarcade]

Do you have any insulation on the back of those pots?

Even just some electrical tape or cardboard will help. If, as I think I see, you don't have any, that means that all the solder joints underneath them are shorting out.

Doh! That makes so much sense, I totally forgot you can get those little rubber covers for the pots. I will stick some cardboard in there for the time being, and remember to be more mindful of that going forward. Thanks!

Buzzing and no signal, no LED on etc could be a broken ground connection.
Also measure voltages in circuit, doe4s it see 9V, what voltages are on IC?

Will do! I have a multi-meter on its way in the mail, and will report back once i have a chance to test it all out. Thank you!

[jimilee]

If you are testing it outside of an enclosure, you have to ground both the input and the output jacks.


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[Gnarcade]

If you are testing it outside of an enclosure, you have to ground both the input and the output jacks.


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Dang that's another thing I totally forgot about!!!! I didn't do that when testing it outside a case I will definitely give that a shot after work today. Needless to say I will feel quite silly if that turns out to be the culprit.

[jimilee]

If you are testing it outside of an enclosure, you have to ground both the input and the output jacks.


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Dang that's another thing I totally forgot about!!!! I didn't do that when testing it outside a case I will definitely give that a shot after work today. Needless to say I will feel quite silly if that turns out to be the culprit.

Naaa. If that's it, you should feel relieved you don't have to dig deeper.


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[alanp]

That mixed feeling of shame, and relief... I know it well.