Glory Hole - Low buzzing sound

[JerryDamm]

Last week I finished off building a Glory Hole pedal, everything seems to work fine so far.
Only when it's activated I noticed there i a low sounding buzz/humm, in a sort of pulsating way.

Anyone got a clue what this good be? Broken IC?

Here are some photo's of the build

Thanks in advance
-Jerry

I

 

[Nostradoomus]

See if moving your input/output wiring away from the opamp helps.

 

[Drayve85]

Was your soldering iron on when you heard the sound?

 

[JamieJ]

Is there a dust cover on the Tone pot? That could be shorting out on the board. Can we see the other side of the board to inspect soldering? Some of the pot joints look suspect for either too little or being a cold joint.

Try to take voltages from your op amp.

Then it’s down to checking component values and if nothing looks amiss then audio probe the circuit.

This thread is helpful:

TUTORIAL - Troubleshooting 101

There comes a time for every builder to spend multiple hours soldering, wiring, and breadboarding a certain circuit just to have it work incorrectly, if at all. This could happen on your first build or any build after that. This write up is to help you in your quest to figure out why it isn't...

forum.pedalpcb.com

 

[JerryDamm]

Was your soldering iron on when you heard the sound?

Heey Drayve,

We tested the drive plugged into a T-Rex Fuel Tank. No soldering iron closeby in that test.

 

[JerryDamm]

See if moving your input/output wiring away from the opamp helps.

Heey Nostradoomus,

Good point! will test this tonight. I'll let you know how that worked out.

 

[JerryDamm]

Is there a dust cover on the Tone pot? That could be shorting out on the board. Can we see the other side of the board to inspect soldering? Some of the pot joints look suspect for either too little or being a cold joint.

Try to take voltages from your op amp.

Then it’s down to checking component values and if nothing looks amiss then audio probe the circuit.

This thread is helpful:

TUTORIAL - Troubleshooting 101

There comes a time for every builder to spend multiple hours soldering, wiring, and breadboarding a certain circuit just to have it work incorrectly, if at all. This could happen on your first build or any build after that. This write up is to help you in your quest to figure out why it isn't...

forum.pedalpcb.com

Heey Jamie!

I used Polyimide tape to isolate the PCB from the pot on the back side.

Thanks for the thread! Idefinitely will check that out.

I'll try to make a photo later on if the tip from Nostradoomus did not solve the problem.

 

[JerryDamm]

See if moving your input/output wiring away from the opamp helps.

This did a lot for the buzz, so thanks! Still have to test it a bit longer, but it seemed to be solved for now.