Chk-v9.04g Circuit Diagram -

A small transformer or SMPS circuit provides auxiliary voltages (usually for the cooling fan and IGBT gate drive, and for the MCU and display). Common Faults & Troubleshooting

Looks like a power supply. From the label I'm thinking it's a 90vdc supply for a DC motor. ... Induction cooker PCB. Electronics Craftsman

Protection and safety

The CHK-V9.04G relies on a structured, modular design to manage high-power high-frequency electricity safely. Understanding how these distinct stages interact is crucial for tracing faults.

Inspect the chain of high-value current-sensing resistors (typically 240kΩ, 330kΩ, or 470kΩ rated for 1W/2W). If any read open-circuit, the MCU cannot "see" the pot. after a few minutes Overheating or faulty NTC thermistor feedback. chk-v9.04g circuit diagram

: Negative Temperature Coefficient (NTC) thermistors are pressed against the underside of the cooking glass surface and attached directly to the IGBT aluminum heatsink. If temperatures cross threshold safety limits, the MCU instantly stops PWM generation. Component Specifications and Substitutions

The power section of the CHK-V9.04G typically features a dual-rail topology. A small transformer or SMPS circuit provides auxiliary

Most CHK-V9.04G boards have onboard LEDs to indicate "Power," "Heating," or "Cooling" status. 3. Troubleshooting Using the Diagram