: Typically indicates a problem with the mains voltage being too low or too high.
The is a widely used control board found in many popular induction cookers , most notably within the Philips Viva Collection (such as the HD4931, chk-v9.04g circuit diagram
, and HD4902 models). Understanding the circuit diagram of this board is essential for troubleshooting common issues like power failure, heating inconsistencies, or specific error codes (E1–E4). Core Functional Blocks of the CHK-V9.04G : Typically indicates a problem with the mains
The circuit is generally divided into several key stages that manage power conversion and user interface: Core Functional Blocks of the CHK-V9
: Converts 220V AC input into high-voltage DC (around +310V) via a bridge rectifier and a large filter capacitor. It also includes a step-down Switch Mode Power Supply (SMPS) that provides +18V for the cooling fan and IGBT driver, and +5V for the microcontroller.