Tube Driver 2.0 DOA

[jhaneyzz]

Just completed a TubeDriver 2.0 build but not getting any sound when engaged.

Bypass works properly.
Tube is getting 60v.
LED doesn't even light

It must be something with the relay or IC controlling the relay but I've never built a pedal with a relay switch.

The relay specified in the documentation called for an "FTR-B4CA4.5Z". I got an F.T. B4CA4.5Z
The rows of relay pins on the relay I installed were closer together than the holes on teh PCB but I bent them to make it work. I assumed it was same part, in smaller package.

The relay seems to work because the pedal passes signal, but when I press the switch everything goes silent.

Interestingly, if the pedal is in this state. guitar signal going in, but engaged and silent, and I unplug the power, I get bypass signal. if that helps.

I am powering with 9v 500ma. (center negative this time jimilee! center negative...

 

[Jonnytexas]

2 joints below the LED there appears to be a short.

 

[jhaneyzz]

2 joints below the LED there appears to be a short.

Thanks for the eyes, but I'm not sure where you mean.

 

[Jonnytexas]

Thanks for the eyes, but I'm not sure where you mean.

If you look below LED1 from the solder side of the board, it looks like there is a small flake of wire between two of the pads.

 

[jhaneyzz]

If you look below LED1 from the solder side of the board, it looks like there is a small flake of wire between two of the pads.

Ah... yes, that was just a piece of cotton fiber.

I'll clean my boards before posting diagnostic photos in the future.

 

[Feral Feline]

Two joints... those eyes must surely be red.

The eyes have it.

 

[jhaneyzz]

Swapped in a new 40106 chip I received today and the pedal is working as intended.

Thanks to all who helped diagnose this.