If you are indeed working on a Lenovo device, the 17ips72 schematic will be of no use. For a Lenovo laptop, you must search for the specific model number printed on the device itself. For generic laptop motherboards, repair guides are sometimes shared in forums, but they are much less standardized than TV power supply schematics.
Elias looked back at the schematic. The LVDS mapping—the map that told the screen which pixel was red, blue, or green—was standard, but the timing wasn't. He stared at the cryptic notes in the margins of the PDF. ‘Sync on Green.’ 17ips72 schematic
The board is designed to convert AC mains power into the DC voltages required for the TV's mainboard and LED backlight. Key sections of the schematic include: If you are indeed working on a Lenovo
Never solder components while the board is plugged in. Elias looked back at the schematic
Check the main fuse. If blown, the primary bridge rectifier or the PFC MOSFET is likely shorted.
This section generates the low-voltage rails required for the TV’s mainboard and backlight.