LG47LN TV backlight strip

LG47LN TV backlight strip

How to replace LG47LN TV LED strips？

LG47LN LED strip installation tutorial

Buy LG47LN TV LED strips online

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Safety Precautions

Power Off & Discharge: Unplug the TV and wait 30 minutes to discharge capacitors. Avoid electric shock risks.

Workstation Setup: Use a clean, padded surface to protect the fragile LCD screen. Wear anti-static gloves to prevent damage.

Tools: Gather screwdrivers, plastic pry tools, suction cups, and replacement LED strips (ensure compatibility with LG47LN).

Step 1: Disassemble the TV

Remove the Back Panel:

Unscrew all rear panel screws. Use a plastic pry tool to gently separate the bezel clips. Avoid metal tools to prevent scratches.

Access the LED Strips:

Carefully detach the LCD screen. For larger screens (like the LG47LN), use suction cups to lift the panel evenly. Place it face-down on a soft cloth.

Locate Faulty Strips:

Inspect LED strips for burnt/damaged LED (blackened or cracked). Test with a multimeter (Rx10k) to identify open circuits

Step 2: Replace the LED Strips

Remove Old Strips:

Unscrew or unclip the faulty strips. Note the orientation and wiring connections (e.g., 2-pin vs. 3-pin connectors).

Install New Strips:

Align replacement strips (ensure voltage matches original specs, e.g., 3.2V per LED). Secure screws/clips firmly.

Pro Tip: Adjust the circuit’s current (e.g., modifying resistors R238/R239) to reduce heat and extend lifespan.

Step 3: Reassemble & Test

Reattach the LCD Screen:

Clean dust from the screen and LGP. Misalignment can cause uneven backlighting.

Power On:

Reconnect cables and test the TV. Check for uniform brightness and no flickering.

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