The **Samsung UN40F5500AGXPE** is a 40-inch Smart LED TV from the F5500 series (2013 model year). Understanding its electronic components is essential for troubleshooting or repair. Below is a breakdown of the primary internal boards and key technical specifications. --- ## 1. Internal Board Architecture The TV consists of three main circuit boards and the display panel assembly. | Board Name | Part Number (Common) | Function | | :--- | :--- | :--- | | **Main Board** | BN94-06711A / BN41-01958A | Processes video/audio signals, houses HDMI/USB ports, and manages Smart Hub features. | | **Power Supply (PSU)** | BN44-00616A | Converts AC wall power to DC voltages (5V, 12V, 13V) for the main board and high voltage for backlights. | | **T-CON Board** | BN41-01938B | The "Timing Controller." It translates video data from the main board into signals the LCD panel can understand. | | **Wi-Fi Module** | WIDT30Q / BN59-01161A | Provides wireless connectivity for Smart TV applications. | --- ## 2. Key Component Details ### A. The Main Board (The Brain) This board features a **Dual-Core Processor**, which was a significant upgrade for this series to allow multitasking within the Smart Hub. * **Inputs:** 3 HDMI ports, 2 USB ports, Component/Composite, and Ethernet (LAN). * **Audio Chip:** Integrated digital-to-analog converter for the two 10W down-firing speakers. ### B. Backlight System (LED Strips) The UN40F5500 uses **Direct-Lit LED** technology. * **Strips:** It typically contains several horizontal strips of LEDs located directly behind the LCD panel. * **Common Failure:** If the TV has sound but no picture (or a very dim picture), one or more LED beads on these strips have likely burnt out, breaking the circuit. ### C. The LCD Panel * **Resolution:** 1920 x 1080 (Full HD). * **Refresh Rate:** 60Hz native (Clear Motion Rate 120). * **Interface:** Connected to the T-CON board via dual LVDS ribbon cables. --- ## 3. Technical Specifications Summary | Feature | Specification | | :--- | :--- | | **Voltage Requirement** | AC110-240V 50/60Hz | | **Power Consumption** | Max 108W / Standby < 0.3W | | **Processor** | Dual Core | | **Smart OS** | Samsung Smart Hub (Legacy) | | **Digital Tuner** | ISDB-T (Common for the "AGXPE" Peru/Latin America region) | --- ## Common Electronic Issues 1. **Capacitor Failure:** Though less common in the "F" series than older "B" or "C" series, the Power Supply can still suffer from bulging capacitors, leading to "no power" or "clicking" sounds. 2. **Firmware Corruption:** The EEPROM chip on the Main Board can sometimes fail, causing the TV to get stuck on the Samsung logo. 3. **Horizontal Lines:** Usually indicates a failure within the T-CON board or a physical defect in the LCD panel's COF (Chip on Film).