The 17IPS72 is a Switched-Mode Power Supply (SMPS) designed to convert high-voltage AC mains into stable DC rails for the TV's internal components. Key sections of the schematic include:

When the TV is turned on, the main processor sends a signal to the 17IPS72 to activate the PFC and main switching stages, providing full power to the 12V and LED backlight rails.

Feedback loops (usually using optocouplers) ensure that if a rail drops under load, the controller increases the switching frequency to compensate. Common Faults and Troubleshooting