SOLVED muzzle (classic with retrofit) almost no signal, ground buzz, and not gating

[maertz13]

ground loop stops when i hold both cables for the key/thru. is there supposed to be a ground between them? because it isn't shown on the wiring guide. very little signal is getting through. LED stays blue no matter what.

guitar into key > key out to dist pedal in > dist pedal out to gate input > gate output to amp

I haven't gotten beaten up by a build this hard in a long time. hoping someone spots my error. i would be zero percent surprised if i got the switching jacks wrong. i put a little heat shrink on the rest of the terminals of the switching jacks to avoid any potential shorting.

 

[Robert]

EDIT: Actually, since your jacks aren't installed in an enclosure they'll need a ground connection. Connect the sleeve to the center pad beside the pad marked "T".


Disconnect the Key jacks from the PCB and install a jumper wire across the two pads where the jack was connected.

See if the gate functions normally as a standard gate with in front of the amp. Guitar > Input, Output > Amp.

 

[maertz13]

EDIT: Actually, since your jacks aren't installed in an enclosure they'll need a ground connection. Connect the sleeve to the center pad beside the pad marked "T".


Disconnect the Key jacks from the PCB and install a jumper wire across the two pads where the jack was connected.

See if the gate functions normally as a standard gate with in front of the amp. Guitar > Input, Output > Amp.

i was wondering what that other pad was for. I'll give it a shot and report back. thanks!

 

[maertz13]

my ground issue is entirely fixed, awesome. my LED is changing when it gets signal, but i'm not getting much output. if i CRANK the volume on the distortion pedal, i get the faintest glimmer of a signal. also odd, i'm certain i tested this LED and know it to be blue and red, but i'm not getting red, more like a purple.

edit: when bypassing the key input, i'm getting a constant buzz until i dime the gate threshold, but it does not react to my guitar signal at all, and does not pass signal

 

[maertz13]

Bump: please advise

 

[maertz13]

found a tiny shred of wire that was bridging to ground. then i was getting the high pitched squeal some users have mentioned. switched BACK to the 1054 charge pump that i swapped when i thought maybe it was the problem. squeal gone. everything seems to be running normally now

 

[pthr]

EDIT: Actually, since your jacks aren't installed in an enclosure they'll need a ground connection. Connect the sleeve to the center pad beside the pad marked "T".


Disconnect the Key jacks from the PCB and install a jumper wire across the two pads where the jack was connected.

See if the gate functions normally as a standard gate with in front of the amp. Guitar > Input, Output > Amp.

after two days, hours of debugging and despair, this comment was the answer!

my muzzle already worked fine, but at some point failed and made buzzing noise. then i realized what the problem was. the input jacks were coated with isolation paint, which wore off because i reinstalled the jacks several times. grounding the sleeves solved it.
thank you robert!