Danny, I know these aren't your speakers but I've found the people in this circle to be some of the most knowledgeable I've found so hopefully this is ok here! If not, please feel free to move to a more appropriate Circle ...
So, my wife and I dropped off a bunch of stuff at the local Goodwill so I thought I'd run in after and see if someone had donated anything cool. I rarely ever find anything there but did find a set of KEF C55's that were surprisingly good a number of years ago. Anywho, I ended up spotting a set of Sonos SP100 speakers, did a quick search online and found some decent reviews so I figured, for 10 bucks, they were worth a shot. The cabinets are in really good shape and all the drivers looked nice with no blown coils on the woofers.
I got them home and hooked them up, one sounded really good and the other, not so much. Put my ear up to the tweeter and no sound
So I proceeded to take out the drivers and test them individually with a volt meter and they both tested at 4 ohms. Connected a small battery to each terminal and they both produce sound so I know the drivers are still good.
Next I went to work on the crossovers testing the paths and found that one of the capacitors (a 5.6uF 100V) was not passing voltage. So I went to the local electronics store (Vetco) and picked up a new cap and thought I'd replace the other since I was at it (a 22uf 100V). I did that yesterday and boom, still no sound from the tweeter
So my guess is that the network board itself is bad.
I contacted Sonos and they refuse to help. They won't get me crossover specs (I found out through their forum its a an 1850hz filter), won't sell me a new crossover and won't let me send in the crossover for repair. Gee, thanks guys.
So ... all that said, I'm hoping someone can help me figure this out and get these puppies playing!
Attached are pictures of the crossover and speaker.