I need some help figuring out some problems with my power windows. I have replaced the block of switches in the driver door, I thought that was were the problem was. The windows will work and then stop working. I later found out that the problem exists in all the doors.

 

give your passengers a hammer and a handheld vacuum and tell them to figure out how to open the windows

 

Have you checked the volts come into the master switch? Did you check your grounds? Your best bet would be to get a wiring diagram from the window circuit and get out the muiltimeter and start tracing the wires and checking for voltage drop. May be a lose ground or some corrision somewhere.