32ap11s4lv1.1 Schematic Diagram [upd]

32AP11S4LV1.1 is a GIP (Gate-in-Panel) type LCD panel commonly used in 32-inch Samsung LED TVs, such as the UA32EH4003R. It often suffers from "double image" or horizontal line issues, which technicians typically resolve by modifying specific control signals on the T-CON board or panel PCB. Voltage and Signal Guide

A malfunctioning DC-to-DC converter stage is a prime suspect when the screen goes completely blank while the backlight operates. Analyzing the highlights six critical power rails that must be present at their designated test points: Vincap V sub i n end-sub 32ap11s4lv1.1 schematic diagram

32AP11S4LV1.1 Schematic Diagram: Troubleshooting & Repair Guide 32AP11S4LV1

: Necessary if you must perform track modification adjustments to isolate internal glass shorts. Analyzing the highlights six critical power rails that

| Fault Symptom | Likely Cause | Solution | | :--- | :--- | :--- | | | A failing T-CON board, often related to the RD20 and R019 resistors or the VOFFE voltage rail. | Follow the "cut point" repair method: remove resistors RD20 (220Ω) and R019 , then solder a jumper wire from the VOFFE test point to the pad of the removed resistor. | | | Blank Screen (No Image), Sound OK | Missing or corrupted data in the IC3 (24C64WP) EEPROM. | Replace the 24C64WP EEPROM with a pre-programmed chip or use an EEPROM programmer (like the RT809H) to write a known-good firmware dump to the existing chip. | | | Distorted Image / Incorrect Colors | LVDS signal format mismatch (VESA vs. JEIDA) or a failing MAX9694E equalizer. | Identify pin 21 on the LVDS connector. In some cases, forcing 3.3V to this pin can fix the format. If not, the MAX9694E may need replacement. | | | Corroded/Missing Components (e.g., RD40) | Physical damage from liquid spill or previous repair attempt. | The schematic is essential. Use it to identify the exact value of the missing component (e.g., a 100kΩ resistor at RD40 ) and solder a new one in its place. | | | TV Powers On, Backlight OK, No Image | The DC-DC converter section on the T-CON board is not generating the necessary voltages ( VCOM , AVDD , VOFFE ). | Using the schematic, locate and check the primary power rails. If AVDD (~15V) or VOFFE (~ -11V) are missing, test the BD8193MWV controller and its surrounding capacitors and MOSFETs (like Q1 ). | |

A schematic diagram for would detail:

(30V) : Gate High voltage. This high-amplitude positive rail turns on the Thin-Film Transistors (TFTs) on the liquid crystal matrix. VGLcap V sub cap G cap L end-sub