Stomp switch

All frequent questions on switching: true or not true bypass, transistor-based or mechanical.
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JFP
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Post by JFP »

Hi. New here. I have to replace a stomp switch in a Son of a screamer pedal I builded many years ago. The new stompswitch have 8 lugs. Can`t find any schematics on it. The lugs are numbered in pairs: 1+1, 2+2, 3+3, 4+4. Tried a lot of configurations, but no luck. Also like to put a led on it.

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induction
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Post by induction »

Sounds like a 4PST, maybe. Also sounds kind of useless.

What kind of switch is in the pedal now and why are you replacing it?

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karul
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Post by karul »

Use DMM continuity test, to determine how switch is functioning.

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JFP
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Post by JFP »

"why are you replacing it?"
Used a little too much heat when i soldered it and melted a part of the switch. It newer realy recovered from that...

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induction
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Post by induction »

What kind of switch was it? It would be best to replace it with the same kind, rather than trying to rewire it to make a different switch work.

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JFP
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Post by JFP »

The reason I would like to use this new switch is that I have 6-7 of them. Must have been ordering in my sleep back in the middle of the 90s.

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induction
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Post by induction »

DPDT's and 3PDT's are very easy to find. If you want to add an led (I'm assuming it doesn't already have one, since you mentioned it), a 3PDT would be easiest. You could also do a DPDT with millennium bypass, but that adds several extra components on a daughterboard.

Where are you located? We can probably find a source of 3PDT's or DPDT's that works for you.

If you absolutely insist on using the other switch, it can be done (assuming it is in fact a 4PST: have you done a continuity test yet?), but if you want an led, you will have to go with millennium bypass.

I've been assuming that the pedal is currently wired for true bypass. Is it?

A photo of the inside of the pedal and another one of the new switch (lug side) would be helpful too, just to be sure my assumptions are correct.

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JFP
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Post by JFP »

Thanks for the answers. I think I just buy a new 3PDT switch.
I'm no expert, so fiddling with this is too advanced for me.
Are at work now, so can not send pictures of the actual box and switch.

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