Slave, Controller, and camera probs??

Hi,
I am brand new to this forum. I sure hope I can get some good advice or help on my problem.
I have a Nikon D80. I have a Speedtron Brown lighting system. I have a Wein digital smart slave Model SP-SSLD, and a Pro-Sync Control for the camera hot shoe.
I have been sucessful in how it all works together.....until today.:rolleyes:
Now it will not fire off my lights. The batteries have all been tested, the ciruitry has been tested.
On the slave itself, there are four little white switches so that it will be compatible with the camera. I thought it was fine and set properly.
I cannot get it to fire off my lights for anything.:mad2:
Any suggestions??? Any comments on the equipment?
I would appreciate any kind of help
Gazellus

I have no idea but you might have better luck if you double post to the lighting forum.

Thanks for the answer to my question. I solved the problem. I found out the sync plug on the power pack was out. So its been shipped to be repaired.