Disclaimer: Schematics are copyrighted by Lenovo and Compal. This article is for educational purposes for certified repair technicians only.

The 17ips72p is a switch-mode power supply (SMPS) board typically utilized in LG LED televisions (often corresponding to chassis codes like LA61, LA66, and LN models). It is a moderately integrated board that combines the AC-to-DC conversion stage, the LED backlight driver circuit, and often includes a logic control section for power management.

If you cannot find "17IPS72P," search for "LA-E921P Rev 1.0" . This is the Compal internal board number for the same motherboard.

The is a multi-page document (usually a PDF) that details every electrical connection, component value, voltage rail, and signal path on the motherboard. Unlike a block diagram, the schematic shows exact resistor values (e.g., 100k 0402), capacitor voltages, and FET pinouts.

These rails are essential for the TV to respond to remote control signals while in standby.