Wein W940003 (PN-3) Peanut Slave (3-Pack) PC for Camera

I have had two Wein peanut slaves for many years, and they both work beautifully directly plugged into my Vivitar 283 just fine. I bought a single from amazon.com, and it was DOA. I ordered a second single from amazon.com, and it was also defective. I ordered this 3-pack in hopes that at least one would be functional, and all 3 were DOA. I again tried one of the good ones that that I have in the same strobe, and it worked just fine. I also tried it with a sync cord, but it still did not work. Disappointing, since I had hopes of using it on my spare strobe as a hair-light.