This Metcal MX500P-21 Soldering/Rework System has been tested, and has been found to be faulty. Cosmetically this unit has some minor marks and scratches.

Soldering iron does not heat up when connected to port.

The Metcal MX-500P-21 is a high-performance, dual-port switchable power supply that serves as the foundation for Metcal's renowned precision soldering and rework systems. Operating on a 230V/240V input, this benchtop unit utilizes SmartHeat technology, which delivers pure conduction power dynamically to the solder joint based on thermal demand, eliminating the need for manual temperature calibration or adjustment. Its dual-port configuration allows two operators to share the power supply sequentially, or a single technician to connect two different handpieces—such as a standard soldering iron and a desoldering gun—and toggle between them with a simple front-panel switch. Built with a rugged aluminum housing and a built-in power meter, this power supply provides instantaneous visual feedback on the thermal load, making it a highly reliable and efficient choice for demanding, high-reliability electronics manufacturing and repair environments.