I have mine with the original power adapter - it's a Jameco 6vdc, 500mA, center positive adapter - this one matches the part number: https://www.jameco.com/z/DBU0600500Z2661-Jameco-ReliaPro-Unregulated-Linear-AC-to-DC-Wall-Adapter-6-Volt-0-5-Amp-3-Watt_101266.html Andrew L. Ayers Glendale, Arizona phoenixgarage.org github.com/andrew-ayers