El Sol - Gating Issue

ckendall924

ckendall924

New member
I know this has been posted previously and resolved, but I'm having this same issue and cannot resolve it using any of the suggestions on the previous post.

I get clean bypass. LED turns on, great big Acapulco Gold sound when I dig in. But the sustain dies abruptly with a fuzzy gated sound. The signal even dies completely and back on in a sort of swelling sound as a chord is allowed to ring out. (It's kinda cool, but also not the intended sound with this circuit.)

I've posted some pics below. (Just one thing to note, the pic of the back of my pcb should've been updated. I reflowed all of my solder joints as a good measure. Also, I have 2 sets of the JRC386 chips. I swapped out the IC's to see if that would do the trick. No success.)

Any ideas would be helpful.
 

Attachments

  • tempImagenrVXbJ.png
    tempImagenrVXbJ.png
    4.3 MB · Views: 48
  • tempImageb1jX9f.png
    tempImageb1jX9f.png
    4.2 MB · Views: 46
  • tempImagenzZFov.png
    tempImagenzZFov.png
    4 MB · Views: 45
Sort by date Sort by votes
ckendall924 said:
I know this has been posted previously and resolved, but I'm having this same issue and cannot resolve it using any of the suggestions on the previous post.

I get clean bypass. LED turns on, great big Acapulco Gold sound when I dig in. But the sustain dies abruptly with a fuzzy gated sound. The signal even dies completely and back on in a sort of swelling sound as a chord is allowed to ring out. (It's kinda cool, but also not the intended sound with this circuit.)

I've posted some pics below. (Just one thing to note, the pic of the back of my pcb should've been updated. I reflowed all of my solder joints as a good measure. Also, I have 2 sets of the JRC386 chips. I swapped out the IC's to see if that would do the trick. No success.)

Any ideas would be helpful.
Click to expand...
Hey im having this exact same problem, did you find a solution/identify the issue?
 
Upvote 0 Downvote
mgm41887 said:
Hey im having this exact same problem, did you find a solution/identify the issue?
Click to expand...
100% for the OP and yourself... The short answer is check your component values.. verify any cold joints, solder bridges... and make yourself a circuit tracer to hook up and trace the circuit per the schematic.... it will point you to the exact spot the issue starts..
 
Last edited:
Upvote 0 Downvote
swelchy said:
... and make yourself a circuit tracer to hook up and trace the circuit...
Click to expand...

Isn't that why we have Robert?




swelchy

Thread 'Dumb this down for me (Audio Probe) I'm confused'

so If I wanted to build an audio probe to work in conjunction with my signal generator how do I build one ? I want to connect my signal generator to an audio probe built into a scrap enclosure and then run out into a little practice amp I have.... problem is I'm confused on what to connect and where?.. I have a spare enclosure.. some jacks.. capacitors and an extra set of multimeter probes to use to poke around with? Can someone sketch out or explain how to build one and where to connect everything?
G

Thread 'Audio probe help/tips'

So I have a few pedals to trouble shoot...

I'm new to audio probing, but I'm learning. If anyone can give me some tips that would be awesome, any knowledge and experience is welcome.

Just wondering, sometimes the signal is weaker on one side of a resistor to another, is that just due to the resistance value and not a defect?

Sometimes I've found signal to be quieter on the cathode side of a diode, depending on the diode, this is correct and due to the clipping right?

Also, should I generally always be able to get signal on the first two pins of a pot? If I don't does that mean the pot...
  • Like
BuddytheReow

Thread 'Audio Probe Build - Some Thoughts'

So, I’m thinking as my next project which will help future projects is to build an audio probe box.

It would be a 1590a with an input, output, and 9v jack. There would be a multimeter probe with a 100nf capacitor attached to the output jack, alligator clips for the power to the board, and a separate clip from the guitar input.

I’m thinking this could work. Now I have to figure out how to keep the cables nice when not using it. Maybe installing a handle or something to wrap the cables around?

Anyone build something like this before? Does this sound reasonable? I’m sick of my workbench...
  • Like
F

Thread 'Test Box with Audio Probe'

IMG_9097.jpeg IMG_9096.jpeg

Not the prettiest, but by golly, it works! And it already paid for itself!

I pretty much followed the Tagboard Effects layout. https://tagboardeffects.blogspot.com/2014/09/test-box-20.html

The only exception is I added some protection in the form of a Polyfuse, 1N4001, and 100u capacitor.

If you're a relative beginner like me and plan to make a bunch of pedals, make an audio probe. It's worth it.
  • Like
  • This ROCKS!








Lots of info out there, folks; try searching "audio-probe", "circuit-probe", and "Debugging tools"

It's a cap, a jack/plug and some wire.
audio_probe DIY plug, cap, wires....gif
Slightly better idea, use a jack and a regular lead...
audio_probe_socket1 BETTER AUDIO PROBE Female.gif

Vids on yootoob to show you how to use it.

If you've got a Protoboard Micro (or big protoboard), it's very easy to chuck a cap on it and add a jumper to start probing.

An audio-tracer /probe or whatever you want to call it is easy enough to make a standalone unit, but I use my Protoboard Micro all the time and then don't have to make/loose/find/not-find/make-again the stand-alone audio-probe.
 
Last edited:
Upvote 0 Downvote
Feral Feline said:
Isn't that why we have Robert?




swelchy

Thread 'Dumb this down for me (Audio Probe) I'm confused'

so If I wanted to build an audio probe to work in conjunction with my signal generator how do I build one ? I want to connect my signal generator to an audio probe built into a scrap enclosure and then run out into a little practice amp I have.... problem is I'm confused on what to connect and where?.. I have a spare enclosure.. some jacks.. capacitors and an extra set of multimeter probes to use to poke around with? Can someone sketch out or explain how to build one and where to connect everything?
G

Thread 'Audio probe help/tips'

So I have a few pedals to trouble shoot...

I'm new to audio probing, but I'm learning. If anyone can give me some tips that would be awesome, any knowledge and experience is welcome.

Just wondering, sometimes the signal is weaker on one side of a resistor to another, is that just due to the resistance value and not a defect?

Sometimes I've found signal to be quieter on the cathode side of a diode, depending on the diode, this is correct and due to the clipping right?

Also, should I generally always be able to get signal on the first two pins of a pot? If I don't does that mean the pot...
  • Like
BuddytheReow

Thread 'Audio Probe Build - Some Thoughts'

So, I’m thinking as my next project which will help future projects is to build an audio probe box.

It would be a 1590a with an input, output, and 9v jack. There would be a multimeter probe with a 100nf capacitor attached to the output jack, alligator clips for the power to the board, and a separate clip from the guitar input.

I’m thinking this could work. Now I have to figure out how to keep the cables nice when not using it. Maybe installing a handle or something to wrap the cables around?

Anyone build something like this before? Does this sound reasonable? I’m sick of my workbench...
  • Like
F

Thread 'Test Box with Audio Probe'

IMG_9097.jpeg IMG_9096.jpeg

Not the prettiest, but by golly, it works! And it already paid for itself!

I pretty much followed the Tagboard Effects layout. https://tagboardeffects.blogspot.com/2014/09/test-box-20.html

The only exception is I added some protection in the form of a Polyfuse, 1N4001, and 100u capacitor.

If you're a relative beginner like me and plan to make a bunch of pedals, make an audio probe. It's worth it.
  • Like
  • This ROCKS!








Lots of info out there, folks; try searching "audio-probe", "circuit-probe", and "Debugging tools"

It's a cap, a jack/plug and some wire.
View attachment 119699
Slightly better idea, use a jack and a regular lead...
View attachment 119700

Vids on yootoob to show you how to use it.

If you've got a Protoboard Micro (or big protoboard), it's very easy to chuck a cap on it and add a jumper to start probing.

An audio-tracer /probe or whatever you want to call it is easy enough to make a standalone unit, but I use my Protoboard Micro all the time and then don't have to make/loose/find/not-find/make-again the stand-alone audio-probe.
Click to expand...
yah.... I've finally learned this is the way to do it and it's usually one of the first things I do now when something doesn't fire right up... You guys have taught me a ton.
 
Upvote 0 Downvote
You must log in or register to reply here.
Back
Top