If you need to replace the board completely, you can search for the ILPI-354 V.A Go to product viewer dialog for this item. on sites like 365powersupply.com or AliExpress.
The is a highly popular power supply and LED driver combo board. It features prominently in mainstream flat-panel Dell monitors. These models include the Dell E1916HV Go to product viewer dialog for this item. Go to product viewer dialog for this item. .
The "VA" typically stands for "Voltage, AC" or "Volt-Ampere" and is used to describe the board's power specifications. It is not a separate version of the board but a specification.
What are the your monitor is showing?
A discrete bridge rectifier converts the AC voltage into rough DC.
Drops the high voltage down to stabilized low-voltage DC rails (typically 5V for the logic board and 12V–19V for the backlighting components) via Schottky diodes and electrolytic filter capacitors.
Typically a T2A/250V radial or glass fuse. If open, expect a dead-short down the line. Bridge Rectifier (D1): Converts AC input to pulsating DC. ilpi354 va schematic upd
| Reference Designator | Component | Function / Typical Value | Failure Mode & Notes | | :--- | :--- | :--- | :--- | | | PWM Controller | SOT-23-6 package. Marked DP=*** (R7731AGE). The core switching regulator IC. | Blown or damaged due to power surges (e.g., lightning) or electrical stress. | | F850 | AC Input Fuse | 2.5A square-type fuse. | Open circuit / blown. Can be replaced with a 3.15A fuse. | | Q850 | Main MOSFET Switch | PDF04N65L (N-Ch, 4A/650V) in a TO-126 package. The main high-voltage switching transistor. | Shorted from drain to source. Can be replaced with SVF4N65F (TO-220F) with heatsink modification. | | D854 | Output Rectifier | SR5200 (5A/200V) Schottky diode. Provides output rectification for the backlight or main output circuit. | Short-circuit, often caused by lightning strikes. | | R845 | PWM Current Sense Resistor | 0805 package. Marked 271 (270Ω). Connects to pin 4 of the PWM IC. | Open circuit or value drift. Can be replaced with 200Ω or 101 (100Ω) type. | | R848 | MOSFET Gate Drive Resistor | 1/8W through-hole resistor, 10Ω. Connects to pin 6 (Gate Drive) of the PWM IC. | Burned open. Can be replaced with a 20Ω resistor or a 1206 100 (10Ω) SMD resistor. | | R869 | Main Current Sense Resistor | 2W, 1Ω resistor. A high-power sense resistor on the primary side. | Burned open. Can be replaced with 2W/1.1Ω or 1W/0.86Ω. | | C852 | Safety Capacitor (X-Cap) | Part of the AC input filter. | Solder joints can crack, causing intermittent power loss. Requires resoldering. |
Replace shorted MOSFET. Always check and replace parallel source resistors if they appear charred. Replace fuse.
The driver controller IC features over-voltage and over-current protection. If even a single LED inside the panel breaks open or shorts out, the entire protection circuit trips. You can verify this by testing the screen panel with an external LED strip tester. ⚠️ Critical Safety Guidelines If you need to replace the board completely,
The ILPI-354 VA board generally features a standard Switch Mode Power Supply (SMPS) layout. When applying a "schematic update" or repair using a 5-wire module, the connections are as follows:
Interprets input signals ( BL_ON and 亮度/PWM_DIM ) sent from the monitor’s main logic board to adjust panel brightness seamlessly. Critical Test Points and Voltage Rails