How to repair circuit boards and fuses of large commercial induction cookers

Large commercial induction cookers refer to induction cookers that can be used in commercial kitchens, such as restaurants, hotels, factories, schools, trains, ships, and other commercial kitchens, especially those that restrict the use of open flames by students during specific times. Although the quality of commercial induction cookers is excellent, problems may inevitably occur after long-term use. In this article, we'll discuss how to handle issues with the induction cooker circuit board and fuses. Here's the content:

1. Visually inspect whether the current fuse is blown.
2. Check if the IGBT can break down: Use a multimeter's diode mode to measure whether there is conduction between the "E", "C", and "G" poles of the IGBT. a: "E" and "G" poles, "C" and "G" poles, no positive and negative tests (normal). b: Use the red probe of the multimeter to connect to the "E" pole, and the black probe to the "C" pole, the voltage drop is about 0.4 volts.
3. Check the normality between the rectifier bridge: a: Connect the red probe of the multimeter to the "-" line and the black probe to the "+" line, there is a voltage drop of about 0.9 volts, and no display for reverse connection. b: The multimeter can be used by using the red probe to connect to the "-", and the black probe to record students separately connecting two important parts of the enterprise data management information system input terminal, both have a voltage drop of about 0.5 volts, and no display for incorrect connection. Connect the black probe of the multimeter to the " " and connect the red probe to two different input and output terminals respectively. There is a voltage drop of 0.5 volts.
4. Measure whether the voltage transformer is damaged. Normal working status: Use the resistance mode of the multimeter to measure the secondary resistance of the system current transformer, about 80Ω, and the initial development pole is 0Ω.
5. Check for faults in chip 8316. Measurement method: Use a multimeter to measure the pins of 8316, and there should be no short circuits between 1 and 2, 1 and 4, 7 and 2, and 7 and 4.
6. Check whether capacitor C301, C302, and C303 are damaged due to heating.
7. Insulation switch protection itself is not damaged. Use button action testing data technology to measure whether the CPU port line can break down.

The above is the repair method for the circuit board and fuses of large commercial induction cookers. I hope it can help everyone. For more related knowledge and information, please follow the official website of PXKITCHEN in Guangdong.