I'm building a Nixie tube clock using 74141 drivers, but I have a problem. I get the correct signals from the arduino, but the drivers don't work. The 0, 1 and 2 digits always stay on, no matter what the input is. Does anyone know what is wrong? Input for the drivers is 7 volts and I'm using an arduino nano.
Follow the rules. 
Let's have your circuit schematic, code properly posted and a usable photo of your setup. 