Chk-v9.04g Circuit Diagram Guide

Measure the voltage across the large 5µF capacitor. It must read between .

But 300 volts was too much for the delicate "brain"—the . To protect it, the SMPS (Switching Mode Power Supply) section stepped in. Through a tiny transformer and a series of rapid pulses, it stepped the energy down to a gentle 5V and 18V. The 5V woke up the MCU, which immediately began scanning the Thermal Sensors like a sentry, ensuring the kitchen wouldn't go up in flames.

Check for 310V DC at the SMPS input pin. Replace the Viper12A/AM-22A IC and check the 22Ω flameproof startup resistor. on plug-in Shorted IGBT or shorted main bridge rectifier. chk-v9.04g circuit diagram

Check if the cooling fan spins freely when power is applied. If the fan operates properly, verify the resistance of the NTC thermistors; a room temperature reading should generally fall between 10kΩ and 100kΩ depending on the specification. Safety and Repair Guidance

This public link is valid for 7 days and shares a thread, including any personal information you added. This link or copies made by others cannot be deleted. If you share with third parties, their policies apply. Can’t copy the link right now. Try again later. Measure the voltage across the large 5µF capacitor

An in-depth understanding of the is essential for technicians and electronics engineers who diagnose, repair, or study modern household induction cooktops. This specific printed circuit board (PCB) model layout is widely used in high-efficiency induction heating appliances, including popular models by brands like Philips and various universal Chinese cooktop platforms.

If it is missing or wildly fluctuating below the IC's startup threshold (typically under 10V–12V), check for open-circuit startup resistors or a shorted VCC bypass ceramic capacitor. Step 4: Testing Secondary Output Rails To protect it, the SMPS (Switching Mode Power

Are you encountering a specific (like E1, E2, E3) or visible component damage?

Desolder and test the 100kΩ–470kΩ resistors located in the voltage divider network feeding the comparator IC. Important Safety Warning

If the fuse is intact but there are no lights, measure the voltage across the low-voltage auxiliary power supply output rails. If you don't read 18V and 5V, check the auxiliary power control IC and its accompanying startup resistors.