Joyoung computer board rice cooker failure?

Joyang computer board rice cooker malfunctioned, which troubled many users. In order to help you solve this problem, PHP editor Xinyi has brought you a detailed troubleshooting guide. This guide will provide an in-depth analysis of the common faults of Joyoung computer board rice cookers and provide clear and easy-to-understand solution steps one by one. From circuit issues to sensor failures, you'll find a full range of solutions to your problems. Read on for details below to get your Joyoung rice cooker back in working order.

1. Is Joyoung computer board rice cooker faulty?

Common troubleshooting methods for rice cookers:

1. No response after powering on

First check the power supply status, temperature fuse, and temperature control sensor Rt1. When checking Rt1, you can unplug the CN1 terminal and short-circuit it. If it can be operated at this time, it means that the thermostat Rt1 and its circuit are faulty. If it still cannot be operated after short-circuiting, the control circuit is faulty.

2． The power is cut off too early while cooking

The possible reasons for this failure include: defective thermostat Rt1 (its resistance is about 60k at 20℃ and about 40k at 30℃); poor contact between the inner pot and the heating plate L1 Or the circuit is faulty.

During maintenance, you should first check whether there are foreign objects between the heating plate and the inner pot or whether the inner pot is deformed; check whether the thermostat Rt1 and its installation are correct.

3. Not heating

When inspecting, add water first and then operate the cooking button. If there is no relay closing sound at this time, it may be that the CPU has not issued an instruction; it may also be that the relay is defective. You can check whether the relay coil is energized. If there is a suction sound and there is mains power at both ends of the heating plate, the heating plate or its peripheral circuit is faulty.

2. How to repair Supor rice cooker failure?

1) Phenomenon: When the power plug is plugged in, the power fuse blows immediately.
Maintenance: 1. Water or rice soup enters the power socket of the rice cooker, causing a short circuit. In this case, you can wipe the inside of the socket clean and dry it before continuing to use it. 2. The surface of the rice cooker's power socket or plug is carbonized. In this case, it is best to replace it with a new one. If the carbonization is not serious, it can be cleaned and used temporarily, but it is best to replace it if possible.

2). Phenomenon: Unable to cook.
Maintenance: 1. The power wire is broken. Use the ohms dial on your multimeter to check the power leads. 2. The current limiting resistor is blown. This situation is relatively common. At this time, you can use the ohm block of a multimeter to check the resistance. If the resistor is blown, it must be replaced with a current-limiting resistor of the same type. Do not be careless. 3. The heating tube in the heating plate is burned out. At this time, use the ohm dial of the multimeter to check the heating pipe. If the circuit is broken, you can only replace it with a new heating plate of the same model.

3) Phenomenon: Cooking rice with uncooked rice.
Maintenance: This fault is generally caused by the weakening of the magnetic force of the permanent magnetic ring in the temperature limiter. When starting, you can disassemble the temperature limiter of the rice cooker to check whether the magnetic ring is broken and how the suction force is. If it is damaged, it can only be replaced with a new magnet.

3. Rice cooker repair and failure?

Fault 1: Plug in the power, and the fuse blows immediately

Cause and repair method:

1. Water or rice soup entered the power socket of the rice cooker, causing a short circuit. In this case, you can use paper towels to suck out the moisture in the socket, and then use a hair dryer to dry the socket with cold air before use;

2. The surface of the rice cooker power socket or plug will be carbonized due to long use, causing a short circuit. In this case, you can use fine sandpaper to gently remove the carbonized layer on the surface, then wipe it clean with alcohol and let it dry.

Fault 2: No power supply

Cause and repair method:

1. The fuse is burned out. Replace the insurance (300W-1000W with 10A insurance, 1600W-3950W with 15A, 20A insurance or replace the connecting cable);

2. There is a problem with the line. Check the lines.

Fault 3: The heat preservation light is on, but the cooking light is not on

Cause and repair method:

1. The heating plate does not heat, maybe the power cord is defective. Check the circuit;

2. The heating plate does not heat, or it may be that the metal sheet switch contacts are ignited and oxidized. Use sandpaper or a small file to polish off the oxidized parts of the contacts;

3. Heat the heating plate and check the light board. If it is broken, just replace it with a new one.

Fault 4: Unable to cook

Cause and repair method:

1. The power wire is broken. Use the ohm block of the multimeter to check the power wire;

2. The current limiting resistor is fused. At this time, the resistance can be checked using the ohm scale of the multimeter. If the resistor is blown, it must be replaced with a current-limiting resistor of the same type, and cannot be directly replaced with a wire;

3. The heating tube is burned out. A rice cooker without a current-limiting resistor may burn out the heating tube if it works for a long time. At this time, use the ohm dial of the multimeter to check the heating pipe. If it is open, it must be replaced together with the heating plate.

Fault 5: Rice paste pot

Cause and maintenance method:

1. Due to long-term overload use or water intrusion, the normally closed contacts of the heat preservation switch are sintered and stuck together. Although the rice has been cooked, the limit The thermostat also jumped off, but the heat preservation switch continued to energize the heating pipe, which continued to heat and cause the pot to burn. At this time, you can use a knife to separate the contacts, and then use fine sandpaper to clean the surface of the contacts.

2. The tripping temperature of the magnet is wrong. The tripping temperature of magnets used in pots of different sizes is different. For example, if a 700W pot uses 2500W pot magnets, it will easily burn the pot. Replace with matching magnets.

3. Due to heat transfer, heat dissipation and other reasons, iron pot liner is easy to burn, rust, and develop trachoma. It is best not to choose iron pot liner that looks thick and heavy.

4. Instructions on troubleshooting of rice cookers?

Fault 1: When the power is plugged in, the fuse melts immediately

Cause and repair method:

1. There is water or rice soup in the rice cooker power socket, causing a short circuit. The water in the socket can be sucked out with a paper towel, and then the cold air from a hair dryer can be used to dry the socket before using it again.

2. The power socket or plug of the rice cooker is short-circuited due to surface carbonization due to long use. The carbide layer on the surface can be lightly ground with fine sandpaper and then wiped dry with alcohol.

Fault 2: No power supply

Cause and repair method:

1. The insurance is burned, replace the insurance.

2. There is a problem with the line, please check the line.

Fault 3: The heat preservation light is on, but the cooking light does not turn on

Causes and repair methods:

1. The heating plate does not heat. It may be that the power cord is not good. Check the circuit.

2. The heating plate does not heat up. It may be that the metal switch is oxidized due to contact with the fire. Use sandpaper to remove the oxidized part of the contact.

Fault 4: Cannot cook

Cause and repair method:

1. The power cord is turned on, please use the ohm block of a multimeter to check the wire.

2. Current limiting resistor fuse. At this point, you can check the resistance with the ohm gear of your multimeter.

3. The heating tube is burned out. The rice cooker without a current limiting resistor takes a long time to work and the heating tube is broken.

At this time, use the ohm block of the multimeter to check the heating tube. If the line is broken, it must be replaced with a heating plate.

Fault 5: Rice paste pot

Cause and repair method:

1. Due to long-term overload or water withdrawal, the normally closed contacts of the heat preservation switch are sintered and stuck together. Although the rice has been cooked and the temperature limiter has jumped off, the keep warm switch continues to power the heating tube and continues to heat causing the pot to burn.

2. The tripping temperature of magnets is not good. The tripping temperatures of magnets for pots of different sizes are different. For example, 700 W and 2500 W magnets are easy to stick and match the corresponding magnetic steel.

3. Due to heat transfer and heat dissipation, iron pots are easy to stick to the pot, rust, and develop trachoma. It is best not to choose heavy-looking iron pots.

Fault 6: Cooked rice with uncooked rice

Cause and repair method:

1. The rice-water ratio is wrong, there is less water, adjust the rice-water ratio and try again.

2. This is usually caused by the weakening of the magnetic force of the permanent magnet ring in the temperature limiter. At this time, the temperature limiter of the rice cooker can be removed to check whether the magnetic ring is broken.

3. If there are foreign objects on the bottom of the pot and the heating plate, remove them.

Fault 7: Cooking time is too long

Cause and repair method:

Use a multimeter to see if a set of heating tubes in the heating plate are burned out. If there is a problem with the hot plate, replace it with a new one.

5. Repair the malfunction of sugar-free rice cooker?

Fault 1: When the power is plugged in, the fuse melts immediately

Cause and repair method:

1. There is water or rice soup in the rice cooker power socket, causing a short circuit. The water in the socket can be sucked out with a paper towel, and then the cold air from a hair dryer can be used to dry the socket before using it again.

2. The power socket or plug of the rice cooker is short-circuited due to surface carbonization due to long use. The carbide layer on the surface can be lightly ground with fine sandpaper and then wiped dry with alcohol.

Fault 2: No power supply

Cause and repair method:

1. The insurance is burned, replace the insurance.

2. There is a problem with the line, please check the line.

Fault 3: The heat preservation light is on, but the cooking light does not turn on

Causes and repair methods:

1. The heating plate does not heat. It may be that the power cord is not good. Check the circuit.

2. The heating plate does not heat up. It may be that the metal switch is oxidized due to contact with the fire. Use sandpaper to remove the oxidized part of the contact.

Fault 4: Cannot cook

Cause and repair method:

1. The power cord is turned on, please use the ohm block of a multimeter to check the wire.

2. Current limiting resistor fuse. At this point, you can check the resistance with the ohm gear of your multimeter.

3. The heating tube is burned out. The rice cooker without a current limiting resistor takes a long time to work and the heating tube is broken.

At this time, use the ohm block of the multimeter to check the heating tube. If the line is broken, it must be replaced with a heating plate.

Fault 5: Rice paste pot

Cause and repair method:

1. Due to long-term overload or water withdrawal, the normally closed contacts of the heat preservation switch are sintered and stuck together. Although the rice has been cooked and the temperature limiter has jumped off, the keep warm switch continues to power the heating tube and continues to heat causing the pot to burn.

2. The tripping temperature of magnets is not good. The tripping temperatures of magnets for pots of different sizes are different. For example, 700 W and 2500 W magnets are easy to stick and match the corresponding magnetic steel.

3. Due to heat transfer and heat dissipation, iron pots are easy to stick to the pot, rust, and develop trachoma. It is best not to choose heavy-looking iron pots.

Fault 6: Cooked rice with uncooked rice

Cause and repair method:

1. The rice-water ratio is wrong, there is less water, adjust the rice-water ratio and try again.

2. This is usually caused by the weakening of the magnetic force of the permanent magnet ring in the temperature limiter. At this time, the temperature limiter of the rice cooker can be removed to check whether the magnetic ring is broken.

3. If there are foreign objects on the bottom of the pot and the heating plate, remove them.

Fault 7: Cooking time is too long

Cause and repair method:

Use a multimeter to see if one set of heating tubes in the heating plate is burned out. If there is a problem with the hot plate, replace it with a new one.

6. Repair guide for common faults of rice cookers

The rice cooker is one of the indispensable appliances in the modern kitchen. It brings a convenient rice cooking process and allows us to enjoy more delicious food. However, the rice cooker is not always trouble-free. As a sophisticated electronic device, it will inevitably encounter various problems. Today, we will discuss the most common types of rice cooker failures and how to repair them quickly and effectively.

Common faults and repair methods

During long-term use of rice cookers, various problems will inevitably occur. Let’s introduce them one by one below:

1. The rice cooker cannot heat

Common reasons for this problem are:

Damage to the insulation and heating elements: This is the most common reason. It may be due to aging of the circuits and damaged elements due to long-term use, making it impossible to power on for heating. At this point the insulation and heating elements need to be replaced. Temperature sensor failure: The temperature sensor is a key component of the rice cooker to control heating. If there is a problem with it, the temperature will not be sensed and the heating will not be controlled. In this case the sensor needs to be replaced. Damage to the power cord: A broken power cord or poor contact will also cause the power supply to fail and the rice cooker to fail to heat. You can try replacing the power cord.

2. The rice cooked by the rice cooker does not taste good

This situation may be caused by the following reasons:

The inner pot is deformed or damaged: The inner pot is the direct carrier of cooking rice. If it is deformed or damaged, it will not be evenly distributed. heat, thus affecting the taste of the rice. This requires a new liner. Clogged pressure valve: The pressure valve is responsible for controlling pressure. If it is blocked by dirt, it will not work properly, thus affecting the taste of the rice. The pressure valve can be disassembled for cleaning. Improper program settings: If there is a problem with the rice cooker's cooking program settings, such as unreasonable parameter settings such as time and temperature, it will also affect the taste of the rice. This requires adjusting program settings.

3. Electric leakage or short circuit occurs in the rice cooker

This situation is extremely dangerous. Once it occurs, stop using it immediately and check the following reasons:

Broken ground wire: If the ground wire of the rice cooker is broken, it will cause leakage. The ground wire needs to be replaced. Internal circuit short circuit: The internal circuit of the rice cooker is aging or damp, which may cause a short circuit. This requires inspection and repair by an electrician. Switch or control board failure: If there is a problem with the switch or control board of the rice cooker, it may also cause leakage or short circuit. Relevant parts need to be replaced.

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