Signal issues, prismatic EQ

[jaymucas]

Hello, I have completed a Prismatic EQ pedal from effectslayouts.com. I am getting no output through the jacks. I have tested the power supply and that is working fine. I have made an audio bypass so that I can test the component connections. All the components are giving out a signal, although the signal is very weak. Of note, this bypassed signal is effected when adjusting the potentiometers. I don't even know where to start figuring out what is wrong. I've checked all my solder joints and used different power jack and input/output jack.

Anybody have a suspicion of what I've done wrong? I've done 10-15 builds and I've never had this issue before.

Thanks in advance.

 

[Robert]

Post a picture of your build.

Offboard wiring is usually to blame if the bypassed signal is affected in any way. That's a little trickier with this layout since some of the offboard wiring is included in the PCB layout itself.

 

[jaymucas]

Here is my build. The problem was present prior to and after adding the foot switch. Also, the pots have a couple of layers of electrical tape underneath to avoid any shorts with the components under them.

 

[jaymucas]

Post a picture of your build.

Offboard wiring is usually to blame if the bypassed signal is affected in any way. That's a little trickier with this layout since some of the offboard wiring is included in the PCB layout itself.

Pics added

 

[MBFX]

Here is my build. The problem was present prior to and after adding the foot switch. Also, the pots have a couple of layers of electrical tape underneath to avoid any shorts with the components under them.

Flux is conductive, so make sure to remove it all when you're done soldering. Isopropyl alcohol and a toothbrush are my favorite tools for the job. You should also trim all your leads down so you just have little Hershey's Kisses of solder left. Use flush cutters.

This also looks like a possible solder bridge:


You also have some cold joints. It might be worth painting on some flux, re-tinning your tip (or using a new one), and re-flowing your joints. Shouldn't take long or require any additional solder.

 

[jaymucas]

Flux is conductive, so make sure to remove it all when you're done soldering. Isopropyl alcohol and a toothbrush are my favorite tools for the job. You should also trim all your leads down so you just have little Hershey's Kisses of solder left. Use flush cutters.

This also looks like a possible solder bridge:
View attachment 86851

You also have some cold joints. It might be worth painting on some flux, re-tinning your tip (or using a new one), and re-flowing your joints. Shouldn't take long or require any additional solder.

Cheers. I shall get some supplies in and clean it up a touch.

 

[jwin615]

I think your footswitch may be rotated 90° hard to tell in the photo but looks like the lugs are pointed north and south

 

[jaymucas]

I think your footswitch may be rotated 90° hard to tell in the photo but looks like the lugs are pointed north and south

Well spotted. Thanks