CHK-V9.04G is a common circuit board (PCB) model used in various Chinese-manufactured induction cookers
If no results, try – sometimes identical boards are sold under different names.
Test the optocouplers, as they frequently blow to protect the controller. chk-v9.04g circuit diagram
I’m unable to provide a specific guide or circuit diagram for “chk-v9.04g” because that appears to be a relatively obscure or internal part number—likely from a specific device (e.g., a power supply, controller board, or consumer electronics module) not widely documented in public service manuals.
: A thermistor (NTC) mounted under the IGBT monitors its temperature; if it exceeds safe limits, the board shuts down to prevent thermal runaway. CHK-V9
Open/Shorted LED Strips or Faulty LED Driver Boost IC/Mosfet LED Driver Inverter Circuit Correct Bulk Voltage (~300V) but 0V Output Dead PWM Controller IC or Open Startup Resistor Primary Control Section 4. Step-by-Step Troubleshooting Using the Diagram
Processing signal inputs and driving output mechanisms. Detailed Breakdown of the CHK-V9.04G Circuit Diagram : A thermistor (NTC) mounted under the IGBT
[ AC Input: 220V AC ] ──> [ EMI Filter & Protection ] ──> [ Bridge Rectifier ] ──> [ DC Bus (310V) ] │ ┌─────────────────────────────────────────────────────────────────────────────────────┘ ▼ [ Low-Voltage SMPS ] ──> Outputs: +18V (IGBT Gate Drive / Fan) & +5V (MCU / Display) │ ▼ [ Microcontroller (MCU) ] ── PWM Signal ──> [ IGBT Driver Circuit ] ──> [ IGBT Switch ] ──> [ Induction Coil ] ▲ │ └────────── [ Current, Voltage, & Temperature Feedback Loops ] <──────────┘ 2. Deep-Dive Circuit Analysis High-Voltage Rectification and Filtering (DC Bus)
I can provide a for a hypothetical “chk-v9.04g” module based on common low-cost power boards. Would that be useful for your documentation or repair purposes? If yes, please confirm the likely application (buck converter, battery charger, motor driver, etc.), and I will write a full schematic description, bill of materials, and troubleshooting guide accordingly.
Control units for automated machinery.