Repairing these boards usually involves checking standard failure points:
When a device using this board stops working, the circuit diagram helps pinpoint the culprit: chk-v9.04g circuit diagram
CHK-V9.04G is a common control and power supply circuit board primarily used in induction cookers chk-v9.04g circuit diagram
If you have access to the physical hardware, thoroughly document it: chk-v9.04g circuit diagram
Induction Cooker Circuit Design | PDF | Mains Electricity - Scribd
Then I can help identify its role and likely circuit topology, or locate a similar schematic.
Use Low-ESR (Equivalent Series Resistance) capacitors rated for 105°C on the secondary side to guarantee longevity.
