Here are some pics of what I've done:
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| A/B True Bypass Looper - Total noob!!! http://byocelectronics.com/board/viewtopic.php?f=52&t=54410 |
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| Author: | alcolmx [ Mon Jan 02, 2017 9:36 am ] |
| Post subject: | A/B True Bypass Looper - Total noob!!! |
I just finished my first BYOC project, the A/B True Bypass Looper as the title suggests. Actually I built it twice. First time only the the LEDs worked, second time seemed to be OK... but now I realize there's an issue. If I've got the 2 channels going (either as loops or as A/B channels) and I'm using channel A, I can hear pedal noise from channel B in the background. Distortion pedal noise, and turning pedals on/off comes through the A channel. The pedals don't affect the sound of A, they just add a ton of noise. Without seeing what I've done, can someone suggest what or where the problem might lie? Thanks in advance! |
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| Author: | duhvoodooman [ Mon Jan 02, 2017 1:09 pm ] |
| Post subject: | Re: A/B True Bypass Looper - Total noob!!! |
alcolmx wrote: ...Without seeing what I've done, can someone suggest what or where the problem might lie? It's a LOT more difficult that way. Please post pics and help us help you. Please make them large, well-focused, well-lit shots of BOTH sides of the PCB and all of your jack and switch wiring. |
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| Author: | alcolmx [ Tue Jan 03, 2017 11:13 am ] |
| Post subject: | Re: A/B True Bypass Looper - Total noob!!! |
Here are some pics of what I've done: Attachment: DSC00254.JPG [ 559.32 KiB | Viewed 5478 times ] Attachment: DSC00245.JPG [ 647.94 KiB | Viewed 5478 times ] Attachment: DSC00246.JPG [ 674.35 KiB | Viewed 5478 times ] |
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| Author: | alcolmx [ Tue Jan 03, 2017 11:15 am ] |
| Post subject: | Re: A/B True Bypass Looper - Total noob!!! |
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| Author: | alcolmx [ Tue Jan 03, 2017 11:16 am ] |
| Post subject: | Re: A/B True Bypass Looper - Total noob!!! |
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| Author: | Morgan [ Tue Jan 03, 2017 11:46 am ] |
| Post subject: | Re: A/B True Bypass Looper - Total noob!!! |
I can't see any incorrect layout issues; it's tough to make a lot of things out. There are a couple of things you can try though. 1) Reverse the order of your pedals in the looper. Does the noise follow the pedal currently in loop B to loop A? 2) Try clipping the wire tie and re-routing the A and B loop wires so that they are more separated. Group the wire running to the A loop send and return jacks together, and B loop wires together, and rout them away from each other as much as possible. Maybe some of the B loop wires going to the A/B switch are too close to some of the A loop wires. 3) If you use a buffered bypass pedal, like a Boss tuner or something, try running it in front of the looper. Sometimes buffering the signal will kill the interaction noise. |
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| Author: | duhvoodooman [ Tue Jan 03, 2017 12:31 pm ] |
| Post subject: | Re: A/B True Bypass Looper - Total noob!!! |
The first thing I would check is to make sure that there is absolutely no contact between each of the I/O jacks. Not only can a slight bit of mis-rotation cause contact between them, but also look for any stray bits of wire or solder that could cause a short. Do the same thing for the footswitches--inspect them very closely to make sure there's no shorting between lugs. A single strand of wire between two lugs will cause signal shorting. If you need to get into more sophisticated troubleshooting, then checking point-to-point continuity between lugs on the switches and jacks with a multimeter may help pinpoint the problem. |
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| Author: | alcolmx [ Wed Jan 04, 2017 8:19 am ] |
| Post subject: | Re: A/B True Bypass Looper - Total noob!!! |
Thanks for the tips guys... and for not tearing apart my shoddy workmanship  I played around with the rotation of the jacks and unclipped and separated the A/B wires and all is good. It's dead quiet now, no noise between channels. Thanks again!!!! |
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