SOLVED - VHS - DPDT SWITCH

[Zduck]

I screwed up and soldered the first dpdt switch of the three effects (centre chorus on/off switch) on the wrong side of the board. I was able to remove it and reinstall but pulled off a few pads in the process.

So I’m going to need to bridge some connections from components before, to and after the lugs of the dpdt switch.

Looking at the schematic I am assuming the centre chorus switch is the “SW2”? Does anyone know how the A1, A2, A3 and B1, B2 and B3 on the schematic relates to the lugs on the switch? Or can help me figure out where the lugs go? This is a bit confusing for me to figure out and I don’t want to trash this board, specially as I’ve already soldered the fv-1 chip on it. Thanks!

 

[Cybercow]

The switch pads on the PCB can be traced with the continuity setting on a DMM and compared to the schematic. That should provide positive identification of what goes where.

 

[Bio77]

The 2s are the center lugs of each side of the switch. I would use the continuity tester on your DMM to figure out which of the other pads go where. However, before you do that, if you still have some pad on the other side of the board, check the continuity from the remaining potion of the pad to the next component to test if you have broken the trace. If not, you might still be able to get it soldered in, either flowing in from the top or flipping it over and soldering from the side. If you have some flux, you might want to treat the pad and lug before.

 

[Robert]

You can check continuity (and/or make jumpers) between these points.

There are no connections to the top two lugs of the switch.

 

[Zduck]

You can check continuity (and/or make jumpers) between these points.

There are no connections to the top two lugs of the switch.

View attachment 23626

This helped me so much. Added the jumpers and it works great now! Thanks for saving my board!