maintenance methods
First of all, check the contact of the internal control circuit of the induction cooker. Induction cooker built-in control circuit is mainly used to control induction cooker switch, temperature regulation and other functions, therefore, poor circuit contact may lead to low voltage, so we need to re-check the contact situation, to ensure that each interface contact is good, so as not to affect the normal operation of the voltage.
Second, check the state of the heat sensor. Heat sensor is an important component of induction cooker, it can detect the temperature of induction cooker, when the temperature rises, the sensor can adjust the strength of the current to maintain the normal operation of induction cooker. If the sensor fails, it may lead to the induction cooker 5V voltage low, therefore, we need to check whether the sensor is damaged, and take appropriate maintenance measures to ensure the normal use of the induction cooker.
Furthermore, check the condition of the rectifier tube. The rectifier tube is an important part of the induction cooker, its role is to turn the 220V voltage into a 5V low voltage, so if the rectifier tube fails, it may lead to the induction cooker 5V low voltage, therefore, we need to check whether the rectifier tube is damaged to ensure the normal operation of the rectifier tube.
Finally, check whether the isolation transformer of the induction cooker is normal.
Replacing this capacitor can be repaired, the specific steps are as follows:
1, remove the induction cooker heating plate, only three fixing screws.
2. Find the circuit board below.
3. Determine the damaged capacitor.
4. Replace the capacitor.
5, recovery parts test, fault elimination.
Induction cooker 18v voltage is not normal how to repair
Because the minimum voltage required for the normal operation of the induction cooker is 220V, and the 5V voltage is not enough for the induction cooker to work normally, so it cannot be repaired.
If you want to use a lower voltage stove, you can try to use other types of electric cooker and other equipment, but please pay attention to the safety of use.
Induction cooker 5v voltage is only 2.5v, first of all should check the 5v voltage of the front end of the rectifier bridge, check the AC side of the rectifier bridge front-end voltage is normal, then test the rectifier bridge module, if any module of the rectifier bridge is damaged there will be half wave rectification, output voltage is 2.5v, replace the module after troubleshooting, the voltage will return to 5v voltage.
Generally, first check the induction cooker, first power up the induction cooker control circuit board, and then use a multimeter to measure whether the input of the voltage regulator chip has 12 volts of voltage input, if the input voltage is too low, such as less than 5 volts, then the output must not reach 5 volts, and then check D92, EX92, EC93, R92 and other components.
In general, the 5-volt power supply is mainly to supply power to the CPU, and the load elements of the 5-volt output circuit can be gradually disconnected: including LED light tubes, filter capacitors, keys, cpus, etc. Determine the faulty component, and then measure the output resistance to the ground. If the output is normal, the CPU is damaged.