Samsung Television QN43LS03BAFXZC Parts

Fixes appliances that won't turn on or have intermittent power due to a frayed or damaged cord. Direct-fit replacement restores safe power delivery.

This Main PCB assembly is the primary circuit board that controls video, audio, and system functions for compatible Samsung LED/LCD TVs. Replacing a failed main board restores communication between TV modules and the user interface. What it does:

• Routes and processes audio and video signals to the display and speakers
• Manages power-on/system boot, input selection, and smart TV functions
• Controls HDMI, USB, tuner, and other input/output ports
• Resolve symptoms like no picture, no sound, frozen menus, or loss of smart features

• One (1) Main PCB assembly

• Disconnect power before servicing and discharge capacitors where applicable
• Handle the board by its edges and avoid static discharge; use ESD protection
• Verify board part number before installation; firmware or configuration steps may be required