Introduction This is an actual case where a Samsung dryer was shutting down after a few minutes and displaying an HC error code. Samsung “Overheating” Error Codes The HC error code means that the dryer reached a temperature threshold that it was either not designed for or that is unsafe. Here are some of the […]
Introduction This is a case history of how a Samsung electric dryer that was displaying an HE error code, was successfully diagnosed and repaired. The reader is assumed to be an Appliance Technician that is familiar with safety practices when working with appliance. Appliance have voltages levels within them that can be harmful or lethal […]
Introduction This blog shows you how to test Zener diodes with a multimeter and a few items that are commonly found around the house or workbench. Safety Although the voltages used in the tester we’ll use are relatively low, know that voltages in excess of 30 volts can be a safety issue under the right […]
This blog provides a comprehensive review of the Fluke 116 Multimeter along with the theory behind multimeter usage and operation. About the Fluke 116 Multimeter The Fluke 116 digital multimeter was designed for Field Technicians. It has many functions that are relevant to HVAC, appliance repair, and other like disciplines. Here is a list of […]
Introduction If you get the the expected “S” during a Whirlpool Refrigerator Jazz Board model’s defrost system diagnostic mode, and it changes to the dreaded “O” after only a minute or two, you likely have “ohmic self-heating” of the bimetal thermostat. What is Ohmic Self-Heating? Ohmic self-heating is based on the concept of “ohmic heating”, […]
A “ghost voltage” is an electrical potential that appears on an undefined conductor due to capacitive coupling via proximity to other conductors or by electromagnetic induction. A ghost voltage has almost no ability to source any current and may simply disappear if any kind of a load is connected to it. Further, a ghost voltage […]
Introduction Wouldn’t it be great to have a battery that could supply an infinite current? Your flashlight could run on AA batteries, yet have infinite brightness! You could start a car with a standard 9v battery! Such batteries would be “ideal” voltage sources. Now, enter reality. What is a Voltage Source? A voltage source is […]