Momentary & Latching True Bypass Effects Looper?

[Eemukis]

What do you have connected to what (in, out, send, return)? That jumper merely grounds the send (the loop input) when in bypass - it is lifted when either switch is on.

I just have a guitar going to the input, send to a multi fx, return from multi fx, output to amp. Maybe a ground issue or faulty switch?
Thanks GGBB
P.s. This is my first build(you probably guessed) so I'm not super confident.

[GGBB]

I suppose it could be a faulty switch. If the momentary switch center column is stuck in the on position the signal would be grounded when both switches are in bypass mode, and removing that wire would eliminate the ground connection.

[Eemukis]

Yeah, being the ding dong that I am, I probably overheated the switch. 
I'll check it for continuity and I suspect I'll probably be ordering a new one. Thanks again for the help!

[GGBB]

I probably overheated the switch.

Been there done that.  I think we all have.

[Kröx]

Hi everyone!

I wanted to build a looper with momentary switch and used the second scheme of that post (the one with two 3PDT switches).

I built two of them now and they both don't work as expected.

Here is what happens:

Latch off / Mom off:  Loop Signal
Latch on / Mom off:  Loop Signal
Latch on / Mom on:  Loop Signal
Latch off / Mom on:  Input Signal

I rechecked the wiring and couldn't find any mistakes....

Does anyone have an idea what's the possible mistake?

[GGBB]

Latch off / Mom off:  Loop Signal
Latch on / Mom off:  Loop Signal
Latch on / Mom on:  Loop Signal
Latch off / Mom on:  Input Signal

You have the on and off on the momentary switch wired in reverse/backwards.