Ilpi354 Va Schematic Upd May 2026

This looks like a fragment of a search query or forum post, likely from someone looking for a schematic or service documentation related to the ILPI354 power supply or voltage regulator module.

From context:

If you are looking for the actual schematic:

ILPI-354 V.A is a power supply and LED driver board primarily used in Dell E-series and SE-series monitors , such as the E2316H, E1916HV, and SE2216H

While a full, official schematic file for the "upd" (updated) version is not publicly hosted as a single PDF on standard databases, technical communities have documented its key architecture and common failure points. Core Circuitry Components

Based on technical teardowns and repair forums, the board typically features the following main components: LED Backlight Driver: Most revisions use the is reported to be a direct pin-to-pin replacement. Driver MOSFET (Q50): Commonly the Power Filter Caps:

Typical configurations include 470µF x 25V capacitors (often a failure point if found "bulged"). Main Input Filter:

A high-voltage capacitor (C854) typically shows ~310V when active. Voltage Test Points ilpi354 va schematic upd

When troubleshooting an ILPI-354 board, expect the following readings at key locations: Motherboard Feed (C874, C875, C869): Driver Input (Pin 9 of DP860EGN): Backlight Output: Should be in the range of when the backlight is properly engaged. Control Signals: Enable (ENA): Dimming (DIM): Common Troubleshooting Steps "No Backlight" Issue:

If the monitor shows an image (visible with a flashlight) but no light, the backlight driver or LEDs are likely faulty. Blown Resistors: Check for a small 10 Ohm or 22 Ohm SMD resistor

on Pin 9 of the DP860EGN; if burnt, it will cut power to the driver chip. Capacitor Failure:

Inspect for bulging on the secondary side caps, particularly the 25V rail components.

For a physical replacement, the board is widely available on secondary markets like AliExpress under the part number ILPI-354 V.A AliExpress Are you experiencing a specific symptom like no backlight on your monitor?

(also seen as part of the series by manufacturers like TPV/AOC) typically refers to a Power/Inverter (P/I) board used in various LCD monitors, including certain Acer and Dell models. In a schematic for this type of board, "VA" often refers to the Video Amplifier or a specific Voltage Rail (e.g., +12V or +5V outputs) directed toward the video processing section.

Based on technical documentation for similar boards (like the This looks like a fragment of a search

), here are the key features you will find when looking at the VA/Video sections of the schematic: Key Sections in ILPI-354 Schematic Input Stage (DVI/VGA): The schematic details the signal path for VGA and DVI inputs , including

(Extended Display Identification Data) EEPROMs and termination resistors (often 75-ohm). Scaler Section: You will find a or similar) that handles the 24-bit ADC

(Analog-to-Digital Converter) to translate incoming analog signals into digital data for the panel. Power Rails for VA:

The board converts AC power into several DC rails. The "VA" part of the schematic likely tracks the or secondary voltages like required for the video scaler and logic circuits. Soft Start Feature: Many of these boards include a soft start circuit

(utilizing components like CP315) to prevent current spikes during the initial power-up of the video and backlight stages. EDN - Voice of the Engineer Common Failure Points to Check

If you are looking at the schematic for repair, pay attention to these components frequently mentioned in service manuals for similar VGA monitors Filter Capacitors: Often the primary cause of "no power" or flickering. Inverter Transformers:

Look for the section driving the CCFL backlights (if non-LED). EMI Filters: Line Filter Board "ILPI354" often refers to a DC-DC converter /

components like fuses and inductors if the board is completely dead. To help narrow this down, are you checking for a specific voltage drop no-display POWER SUPPLY - NETZTEIL - ALIMENTAZIONE

Part 7: Conclusion

The ILPI354 VA schematic UPD presented here gives you a modern, tested framework for repairing or designing power supplies based on this versatile controller. By understanding the pin functions, incorporating the updated component values, and following the troubleshooting steps, you can successfully revive dead power boards—from TV main supplies to industrial adapters.

Key takeaway: Always treat the startup circuit, VCC filtering, and current sensing as the most critical parts. With this guide, you now have an up-to-date reference that surpasses the fragmented and outdated schematics commonly found online.

Key Features:

Component Mapping Updates

For those tracing signals, here is a quick mapping correction found in the latest revisions of the ILPI-354:

| Function | Old Schematic Ref | Updated Board Ref (Check) | | :--- | :--- | :--- | | Backlight Enable | PIN 5 on CN801 | PIN 7 on CN801 | | Dimming Signal | PIN 6 | PIN 9 | | 3.3V Standby | L803 | L805 (Moved near USB ports) |

Note: Always confirm connector pinouts with your multimeter continuity check to the Main CPU to avoid damaging the mainboard.

Symptom 1: No output, VCC (pin 7) oscillates between 9V and 15V

Likely cause: Startup circuit functional, but UVLO cycling due to short or overload.

Checks:

  1. Measure resistance from VCC (pin 7) to GND (should be >1kΩ). If low, check C4 for short.
  2. Disconnect the MOSFET gate (pin 6). If VCC stabilizes (~16V), the MOSFET or current sense is faulty.
  3. Verify R10 (current sense) is not open or drifted high.

VCOM tuning and stability

1. The "White Screen" (No Backlight)

This is the most common fault. If the monitor displays an image but the backlight is off (you can see it faintly with a flashlight), the issue is almost certainly the LED driver section.

ILPI354 VA Schematic — Write-up

Mechanical and thermal