Ilpi354 Va Schematic Updated ((full)) < 2024 >

The ILPI-354 V.A is an integrated power supply and LED driver board (PCB #491A011H1400H03) used in several Dell E-Series and SE-Series monitors, including the E2016HL and SE2218HV. The circuit features a primary switching stage, typically utilizing components like the LD75xx or OBxxxx PWM ICs, and a secondary stage providing +5V and +12V/19V outputs. Technical documentation, including schematics and board layouts for repair, can be found via resources like AliExpress

In Rev 1.0 boards, they were 0805 size. In Rev 2.0 boards, they are 1206. If your ILPI354 gets hot but you have 19V on pin 17, replace these resistors even if they measure fine. They develop micro-cracks. Use 1.5-ohm to 2.2-ohm as a modern substitute.

By understanding the common failure cascade (U850 → Q850 → D854 → R869) and using the recommended replacement guide, a careful technician can restore these monitors to perfect working order for a fraction of the cost of a replacement. ilpi354 va schematic updated

Measure the standby voltage (usually ) at the output connector .

Check the voltage output at the backlight connector pin during power-on. If it spikes and drops, an LED is open-circuit. Degraded Electrolytic Capacitors The ILPI-354 V

Identified by the monitor turning on for 2 seconds and then going black.

You know it’s a power management IC. You know it’s probably the reason Pin 1 of your main DC jack has 19V, but the BIOS chip is dead silent. In Rev 2

This section steps down the voltage to standard levels, typically around +5V for the logic board and a higher variable voltage (often +17V to +19V) for the LED backlight driver.

Examine the pins of large components (transformers, connectors) for cracks or dullness, which can cause intermittent connection issues. 3. Basic Diagnostic Steps