Suggested Searches
: Used in various budget-to-mid-range builds. Where to Download
Look for the nearest IC (e.g., a PWM controller like LD7575, OB2269, or TEA1751). Find its datasheet – that will give you 80% of the circuit. Often, power supplies follow generic topologies (flyback, LLC resonant). A schematic search by controller IC often yields a "reference design" nearly identical to your board.
This is not a part number. It is a indicating that the plastic or fiberglass material used in the PCB will self-extinguish within a certain timeframe during a fire test. Nearly all modern computer circuit boards bear this marking.
To find a better schematic for an board, it is important to understand that these markings identify the manufacturer of the raw circuit board (HannStar) rather than the specific device or laptop model.
→ is key – that UL number often traces back to the original PCB manufacturer.
If you're working on a specific project or device, consider:
