Samsung bn94-17421b Tv Main Pcb Assembly Q900B Q80

Product Description

The SAMSUNG bn94-17421b is a main PCB subcon assembly designed to serve as the central processing board in compatible Samsung television sets. This board handles signal routing for HDMI inputs, broadcast tuners, and user interface controls, then transmits video, audio, and command signals through integrated circuitry to drive the display and audio subsystems. It mounts in the main chassis of the TV and connects directly to the power supply board, input ports, and other internal boards. Installation and replacement are typically performed by qualified electronics or appliance repair technicians.

This main PCB assembly is suited for use in Samsung Q-series and Q80-series television models, including sets within the Q900B and Q80 product lines. It governs core system functions including image processing, on-screen menu control, and overall signal coordination across the television platform. Repair technicians working on affected units will find this board a direct replacement for the original failed or damaged component.

Key Features

• Central signal processing board managing video, audio, and command routing
• Compatible with HDMI inputs, broadcast tuner signals, and user interface controls
• Interfaces with power supply board, input ports, and secondary internal boards
• Supports on-screen menu control and display command functions
• OEM-style replacement for the original factory-installed main PCB

Compatibility

Designed as a replacement main PCB assembly for Samsung Q900B and Q80 series television models as identified in the product line designation.

Installation Notes

Installation should be performed by a qualified electronics repair technician. Disconnect the television from mains power and allow capacitors to discharge before handling any internal boards. Use proper ESD precautions when handling this PCB to prevent static damage to integrated circuitry. Reconnect all ribbon cables, harness connectors, and board-to-board connections securely before restoring power.