The Haier LDF50V500S is a 50-inch 4K Smart TV manufactured using the Vestel 17MB110P chassis. Below are the technical specifications for this specific configuration, including the VES500UNDA-2D-N12 panel parameters.1. LCD Panel Specifications (VES500UNDA-2D-N12)This panel is a specialized 50-inch module frequently used in Vestel-produced televisions.FeatureSpecificationManufacturerVestel (Panel assembly) / Typically LG or Samsung cellScreen Size50 inches ($126 text{ cm}$)Resolution$3840 times 2160$ (Ultra HD / 4K)Aspect Ratio16:9Backlight TypeD-LED (Direct LED)Panel TypeVA (Vertical Alignment) - Known for deep blacksBrightness$350 text{ cd/m}^2$ (Typical)Contrast Ratio$4000:1$ to $5000:1$Refresh Rate$50text{ Hz} / 60text{ Hz}$Viewing Angle$178^circ (H) / 178^circ (V)$2. Mainboard Architecture (VESTEL 17MB110P)The 17MB110P is a high-performance Smart TV motherboard capable of processing 4K content and supporting HDR.Chipset: Mediatek / MStar 4K SoC (Quad-Core).System Memory: Usually $1.5text{ GB}$ to $2text{ GB}$ RAM.Flash Memory: $2text{ GB}$ to $4text{ GB}$ (NAND or eMMC).HDR Support: HDR10 and HLG (Hybrid Log-Gamma).Audio: Supports Dolby Digital Plus and DTS TruSurround.Tuner: DVB-T2 / C / S2 (Triple Tuner for Digital/Cable/Satellite).Connectivity: * 3x HDMI 2.0 (HDCP 2.2 supported).2x USB 2.0.Ethernet (RJ45) & Built-in Dual-band Wi-Fi ($2.4/5text{ GHz}$).Optical Digital Audio Out.3. Power Supply Unit (PSU) CompatibilityCommonly paired with the following power boards:Vestel 17IPS12 or 17IPS72.Input: $220text{--}240text{ V AC}, 50/60text{ Hz}$.Technical Notes for Repair/MaintenanceBacklight Failure: This specific panel (VES500UNDA) is known for backlight LED strip failures over time. If you have "sound but no picture," check the LED strips first.Software/Firmware: Because the 17MB110P board is used with many different panels, any board replacement requires the specific Profile File or Panel File for the VES500UNDA-2D-N12. Installing a board with the wrong profile will result in a distorted, upside-down, or solarized image.Service Menu: You can usually access the service menu on this Vestel chassis by pressing Menu 4725 on the remote control to check the "Panel Type" and "SW Version."
