A common metering device used on new walk-in cooler/freezers today is the electronic expansion valve (EEV). It allows for a tighter control of a refrigerant’s superheat value leaving the evaporator ...

Repairing reach-in coolers and freezers with electronic temperature controllers can be challenging at times. Some failures are easy to troubleshoot and repair, but others can be frustrating. For ...

Marine electronics are so operator-friendly that they seem to think like us and do what we expect them to do. We can use them easily without really having to think about what makes them work. That’s ...

The basic metallurgy of solder. How to make a solder joint. How to repair a circuit board. The vintageTEK museum is a geek’s paradise to tour if visiting the Portland, Oregon area. The museum has ...