My foot switch died a couple weeks ago, I can't scroll saw without it, I like to have 2 hands on my work at all times, I was ready to go back to Harbor Freight to purchase a new one ($14.99), but thought I should at least take the old one apart to take a look, to my amazement it was very dirty & full of cobwebs, after fiddling with the wires inside IT NOW WORKS!! The circuitry is very simple inside. I have the monetary foot switch which is pushing 10yrs old. I saved myself $15 bucks.
God Bless
Smitty
414600630_7106656149427181_4132962418010634119_n.mp4