1991 drive

[Herbie]

Hi,


I have completed the pedal, but i have a problem, when i connect IT with power it works , i push the footswitch, led light goes on or off, but when its on and i turn the volume knob IT fades with it lower volume , lower light, Turing volume up light goes brighter...

I also dont got sound when i connect guitar Cables,

See pictures if i did somthing wrong?

Also on the print you have a BP ( i guess by pass?) slot but i dont see Where tot use it.


Hope you Guys can help me

Photo's:

IMG-20211210-151310

Image IMG-20211210-151310 hosted in ImgBB

ibb.co

IMG-20211210-151254

Image IMG-20211210-151254 hosted in ImgBB

ibb.co

Thanks in advance

 

[fig]

Hi. I'd make sure there are no loose wire strands from the power wire maybe touching the volume pot?

 

[Robert]

I'm not familiar with how PCBGuitarMania does things, but my guess is that it's an offboard wiring issue.

I could be wrong, but it looks like your footswitch is rotated 90 degrees compared to the 3PDT breakout board.

 

[Herbie]

I'm not familiar with how PCBGuitarMania does things, but my guess is that it's an offboard wiring issue.

I could be wrong, but it looks like your footswitch is rotated 90 degrees compared to the 3PDT breakout board.

Footswitch is rotated?

You got the names like in, gnd, led,.. on the little print and the main print so cant miss i guess?

 

[Robert]

Footswitch is rotated?

You got the names like in, gnd, led,.. on the little print and the main print so cant miss i guess?

The lugs should be horizontal, not vertical.

That breakout board doesn't match the I/O pads of the PCB exactly.... it'll still work but it won't be buffered bypass like the original.

 

[Robert]

Like this:


Not this:


I can't see the traces of the breakout board but with the footswitch installed rotated you are likely connecting the ground side of the LED to the wiper of the volume pot, which would explain why the volume pot controls the brightness of the LED.

This also would mean the input jack would be shorted to ground when the pedal is active and the output jack would be shorted to ground when the pedal is in bypass.

If you want to test the PCB disconnect the footswitch completely and wire the Input jack directly to IN of the PCB, and the Output jack directly to the OUT of the PCB. If it works you know the PCB is working properly aside from the 3PDT wiring.

 

[Herbie]

Like this:
View attachment 19766

Not this:
View attachment 19767

I can't see the traces of the breakout board but with the footswitch installed rotated you are likely connecting the ground side of the LED to the wiper of the volume pot, which would explain why the volume pot controls the brightness of the LED.

This also would mean the input jack would be shorted to ground when the pedal is active and the output jack would be shorted to ground when the pedal is in bypass.

If you want to test the PCB disconnect the footswitch completely and wire the Input jack directly to IN of the PCB, and the Output jack directly to the OUT of the PCB. If it works you know the PCB is working properly aside from the 3PDT wiring.

Ok thanks for the help i Will check this out first, by redoing the footswitch

 

[Herbie]

Ok thanks for the help i Will check this out first, by redoing the footswitch

Thanks man! That was the problem