986 Top Won't Lower
 

My 1998 Boxster top won't lower. In neutral with engine running and park brake set, windows drop when I release the inside latch. When I press the button to lower the top I hear a click behind me but nothing happens. Same if I press the up button. I pressed the down button a couple of times and something popped behind me. Still get the click afterward but still nothing happening. Any thoughts? Is there a good description of the electrical/mechanical system for the convertible top anywhere?