run speedwave 2640 without controller?

[Ron99]

Yup, it puts out 19V DC. You would plug it into the controller to see if the pump works and that would tell you if it's the power supply or the controller as roblarss suggests. Usually any power supply will have a label that tells you the output so if you can find one at home that puts out 15 to 24V DC you could try it to see if the pump runs.

[mike31154]

Whatever power supply you do find, also make sure it has sufficient wattage rating to run the pump. It's not just about volts.... so for a 2640 model like yours, you need at least 85 watts, 100 would be better. My ancient Compaq notebook power supply produces 18.5 volt & 120 watts.