SAMSUNG (UA43M5570AUMXL ) MOTHERBOARD

The Kelvin (Kevin) KN55UHD‑PRO motherboard serves as the powerhouse behind the 55″ 4K Ultra HD Smart LED TV. Based on a robust MediaTek-powered SoC architecture, it enables vibrant 3840×2160 resolution, a 60 Hz refresh rate, and supports advanced visual enhancements like HDR‑10 and Dolby Vision  The board runs Android‑based OS with 1 GB RAM and 8 GB storage, offering full smart-TV capabilities including pre‑installed apps, screen mirroring, and over-the-air updates It features dual HDMI and USB ports, built‑in Wi‑Fi, Ethernet, RF input, and audio out handling stereo sound with 30 W output. Internally, it interfaces via LVDS to the T‑Con and power boards, and connects to IR controls and panel components, making it a plug-and-play OEM replacement ideal for restoring full visual and smart functionality to the KN55UHD‑PRO series.

AmazonBasics AB43U20PS Motherboard

The AmazonBasics AB43U20PS motherboard powers the 43-inch Ultra HD 4K Fire TV edition smart TV, combining advanced media processing with the intuitive Fire TV OS. It enables smooth 4K video playback, app-based streaming, Alexa voice control, and supports multiple input and output options for home entertainment.

This motherboard integrates essential features such as HDMI ARC, USB media playback, and Wi-Fi/Bluetooth connectivity, offering a full smart TV experience. Ideal for replacement in case of failure, it supports a variety of compatible 43” UHD LED panels and is designed to restore the original smart features and visual clarity of the TV.