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Board index » Build Your Own Clone » Effects Pedal Technical Support » Transistor based Distortions, fuzzes, Octave fuzzes and Overdrives

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infarction
PostPosted: Mon Mar 15, 2021 8:26 pm 
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Classic problem - bypass sound works fine, but nothing comes through when footswitch is engaged. When all three pots are all the way up when switched on there is a hiss through the amp, but not sure if that's indicative of anything useful. Have been over the instructions several times and can't find anything obvious(to my inexperienced eye) wrong. Tested all the resistors and confirmed they are correct, but I'm not 100% sure how to test anything else. Pics of board attached - my first electronics soldering project so, it's possible I did something sloppy. Thanks!


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sjaustin
PostPosted: Tue Mar 16, 2021 6:44 am 
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Hi, and welcome to the forum! We'll be glad to help. Thanks for posting high quality photos; that is a huge help in the troubleshooting process.

I don't see any component placement errors. Your problem is usually caused by a poor solder joint somewhere and is almost always solved by reflowing all the solder joints. This post has more details about that.

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duhvoodooman
PostPosted: Tue Mar 16, 2021 11:56 am 
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sjaustin wrote:
Your problem is usually caused by a poor solder joint somewhere and is almost always solved by reflowing all the solder joints. This post has more details about that.

+1!

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infarction
PostPosted: Tue Mar 16, 2021 4:06 pm 
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Great, thanks! I reflowed some of the footswitch joints, but I'll go back over it and do everything.
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infarction
PostPosted: Sat Mar 20, 2021 5:37 pm 
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Not sure if anyone will see this, but I reflowed the joints, and now it works, with one small caveat. The only time I can get any sound from it is when the bias pot is turn to at least 90% - I do not think it worked like this before, but it is possible it was working that way the entire time. Is that something that could still be caused by a bad joint somewhere ?
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byoc
PostPosted: Mon Mar 22, 2021 11:01 am 
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Any chance you have the bias and volume pots mixed up?

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infarction
PostPosted: Sun Mar 28, 2021 11:08 am 
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My first thought was there is no way I transposed the pots - but I checked anyway, and that was totally it! Thanks so much for the help, had a lot of fun building this, definitely going to get more!
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sjaustin
PostPosted: Sun Mar 28, 2021 12:49 pm 
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Great! Glad you got it working. And as we often say: welcome to your new addiction.

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