Commodore 64 power supply unit (PSU) automated tester with an additional input for an FDD 1541-II/1571-II/1581 power supply. Forces a constant current from the power supply and measures voltage levels and ripple. Results are displayed in real time on a digital OLED display. The tester features an aluminum heat sink to perform long-term tests. Round DIN7 and DIN4 plugs matching the original C64 PSU and FDD PSU pinout.
$29.99 / €25.99
Manufacturer product number:
Gross weight (inc. packaging):
0.1kg / 0.2 lbs
Size (inc. connectors):
50mm x 30mm x 25mm
Power supply failures are among the most common problems among retro Commodore 64/128 systems. A C64 PSU failure can lead to expensive repairs, or even render the entire system useless. This is specifically why we have designed the C64 power supply tester. It runs a thorough test, minimizing the risk of damage due to an ageing factory power supply.
The C64 PSU tester measures the primary +5V DC output voltage and ripple at a constant current of roughly 400mA...500mA. Secondary voltages (9V AC, 12V DC) are measured at a lower current, typically 50...150mA. Measurement results are updated on a digital OLED display in real-time, allowing a live evaluation of the power quality.
The C64 FDD Dual PSU tester has an additional DIN4 input for testing an FDD 1541-II/1571-II/1581 in parallel. The screen will cycle through measurement results performed on both power supplies.
The power supply tester has an aluminum heat-sink allowing to dissipate excessive power and perform long-term testing. It's designed to work both as a quick diagnostic tool, and for long-term stability tests.