SOLVED Switch continuity in the ABY Switcher?

[mkstewartesq]

So, as I described in my build report for this, I had some problem soldering in the AB switch on this and had to desolder and replace it. That didn't do much love for the pads on the component side of the board. Now that it's finshed, it's acting funky and I think I'm going to ned to add some jumpers between some of those pads and where the signal needs to go from there. But here's my question:

On the pads for the AB switch, I'm getting continuity between the 1st and 3rd rows in the first column (lugs 1 and 7) and in the third column (lugs 3 and 9). I thought maybe the switch was bad so I desoldered yet again - but the continuity is still there without the switch when I touch probes to the pads (or what's left of them) on the component side. Looking at the traces on the board and the intended operation of the schematic (as well as just how I understand a 3PDT switch to work), I can't figure out why these lugs would have continuity with each other or if it is intended. Just trying to figure out if this is part of the problem I'm experiencing or if it is just "the way it is, doesn't hurt anything" and I should move on to putting in yet another 3PDT and installing my jumpers.

Pics of board drawings and schematic attached(AB switch is on the left in the top pic, and on the right (labelled A/B) in the bottom pic).

Thanks,
Mike

 

[Robert]

These pads will have continuity if the Y footswitch is on.

 

[mkstewartesq]

These pads will have continuity if the Y footswitch is on.

View attachment 94154

Well, that explains that part. Obviously having this thing disassembled I didn’t realize what position the Y switch was in but once I toggled it to the other position the continuity disappeared. Thank you!

But what about the lugs in the opposite column from the one you marked? Those have continuity as well (but it also disappears when you toggle the Y switch off – so I guess it’s the same?)

M

 

[Robert]

Yep, same thing on that side as well.

 

[mkstewartesq]

Yep, same thing on that side as well.

Thank you – marking this as solved.

M

 

[Robert]

Just curious, what is the switcher doing that is wonky?

 

[mkstewartesq]

Just curious, what is the switcher doing that is wonky?

It just wasn’t passing signal, so “acting funky“ was really a euphemism for “dead”. I’m a little embarrassed that I posted my build report before actually checking it out (because it’s such a low parts count and I finished it too late at night to play, what could possibly go wrong)?).

Checking with an audio probe indicates the signal was getting stuck at that footswitch – so I did more damage than I recognized when I desoldered the first 3PDT, All of the pads on the “solder” side of the board still looked fine but it didn’t occur to me that the damage to pads on the “component“ side was bad enough to break continuity for some of the traces on that side.

But both LEDs worked, and that’s what’s really important, right?

M

 

[mkstewartesq]

See, @Robert? Nice and tidy. You wouldn’t even know a jumper was there unless I told you.