La-9413p Rev 1.0 Schematic [work] Instant

Symptom 3: Fan Spins, Lights On, but No Display (Black Screen)

Since high-power LEDs require a forward voltage often higher than the battery voltage (or a strictly regulated current), the LA-9413P utilizes a boost converter topology.

Check for the platform reset signal ( PLT_RST# ). If PLT_RST# stays low (0V), the CPU is not initializing. 5. Vital Schematic Signal Reference Table la-9413p rev 1.0 schematic

Once you obtain the LA‑9413P Rev 1.0 schematic, you will see a complex document spanning dozens of pages. Below are the most important circuits and components you should locate on the diagram before starting any repair.

Search for the "Always On" power section. This generates the +3VALW and +5VALW rails. Usually a PWM controller like the TPS51225. Symptom 3: Fan Spins, Lights On, but No

: Complex 19V DC input lines that feed into various regulators for 3.3V and 5V power. The Climax: Finding the Glitch

Ensure +1.35V is steady. Try a known-good DDR3L module in alternate slots. Search for the "Always On" power section

A thread on BadCaps.net specifically mentions . The schematic’s USB section shows that the right‑side USB ports are often routed through a dedicated USB power switch IC and a load switch that supplies +5 V to those ports. Using the schematic, a technician can: