Sony 42 kdl42w670a mother board

Main Board Overview

• Sony Part Number:
  Typically labeled 1‑888‑389‑11 or 1‑888‑389‑12 (Board “BLX” or “BAA”)

• Chassis & Board Family:
  Falls under Sony’s RB1G chassis series, shared across models like KDL‑32W650A through KDL‑42W674A Functionality & Features:

  • Acts as the central control unit (“brains”) of your TV.

  • Houses the CPU and NAND flash memory—used for firmware and OS operations .

  • Interfaces with HDMI ports, USB, infrared receiver, network module, audio/video outputs, etc.

• LED Driver Integration:

  • Contains the LED backlight control — typically via an integrated PWM controller (e.g., CXA3854M‑T6) and MOSFET switches

• Compatibility Notes:

  • This board is interchangeable within the RB1G family; other models in the series (≤42 inches) in fact share the same board Many refurbished or used boards available online (e.g. eBay, local parts stores) list it with the KDL‑42W670A tag