SAMSUNG

The motherboard for the Samsung UA43AUE70AKLXL (43″ Crystal 4K Pro Smart TV) is the main circuit board responsible for processing video, audio, smart functions (Tizen OS), and all input/output operations (HDMI, USB, Wi-Fi, etc.). It typically carries a BN94-series part number and includes:

• 4K video processing chipset

• HDMI, USB, Ethernet, and AV input ports

• Wi-Fi and Bluetooth modules (for smart features and remote control)

• Tizen OS firmware storage

• Power and backlight control interface

🔍 Important: The exact motherboard part number (e.g., BN94-xxxxxx) must match when replacing it to ensure compatibility with firmware, display panel, and ports.

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The Samsung UA40D5000PM motherboard (main board), typically identified by part numbers BN94‑05221Q, BN94‑05221W, or BN94‑04470M, is the central control unit for Samsung’s 40″ Series 5 Full HD LED TV (model UA40D5000PM). It houses the HyperReal Engine and Clear Motion Rate 100 chipset to enhance picture clarity, color reproduction, and smoother motion; supports Dolby Digital Plus and SRS TheatreSound audio processing; and provides comprehensive connectivity with 4× HDMI 1.4 ports, 2× USB ports, component/composite inputs, PC VGA and audio input, Ethernet, optical digital audio out, and an RF tuner for multi-system reception (PAL/NTSC/SECAM). As the key interface between external devices, firmware, processing modules, and internal boards (T‑Con, power, LED driver), this OEM board is essential for restoring full AV functionality in case of failures such as no power, no signal, or port malfunction. A pre‑tested used unit (pulled from a working TV) typically sells for around USD 120 and comes with a limited warranty .

Product Description

The Samsung UA32H4100AR motherboard is thought to largely mirror the UA32EH4003R/AR mainboard used in Samsung’s 32″ HD-ready series. These motherboards—often labeled with model numbers like UA32EH4003R or UA32EH4003AR—are widely recovered as refurbished, tested OEM units for repairing TVs that exhibit symptoms such as no display, power issues, HDMI port failures, or system firmware failure.

These boards typically support standard input configurations including HDMI, USB, RF antenna input, and AV connections. They also handle video rendering, audio output, tuner functions, and system control logic. Indian vendors such as Great Bharat Electronics and AndroidFixCell list these boards for around ₹1,600 to ₹2,300, often including a short-term warranty (20 days testing or up to 1-month replacement). Some sellers even provide free video-call guidance for installation.

Before ordering, it’s essential to verify the exact part number printed on your TV’s board (when the rear cover is removed) and ensure compatibility with the UA32EH4003 variant. Proper installation by a qualified technician is advised to avoid static damage and ensure correct seating and firmware matching.