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LG EAY65689421 (EAY65689421) OLED TV Power Supply Board

• Part Number: EAY65689421 (EAY65689421)
• Board Number(s): EAX68999801(1.8)
• Product Type: LED TV Main Board
• Compatible TV Model(s):

OLED77A1AUA BUSWLJR, OLED77A2PUA DUSQLJR, OLED77B2AUA DUSQLJR, OLED77B2PUA CUSQLJR, OLED77B3PUA

Substitute Parts: EAY33783401, EAY65689422, EAY65689425

Product Description

This LG EAY65689421 power supply board is a critical component that converts AC power from your wall outlet into the DC voltages required to operate your OLED television. When your TV won't turn on, shows no power indicator, or experiences intermittent power issues, a failing power supply board is often the culprit. This genuine replacement part restores reliable power delivery to all TV subsystems, resolving no-power conditions, clicking sounds during startup, and unexpected shutdowns.

Key Features

• Genuine LG replacement part ensuring perfect compatibility and reliability
• Resolves common power-related issues including no power, intermittent operation, and startup failures
• Compatible with multiple LG OLED 77-inch television models
• Board number EAX68999801(1.8) for precise identification
• Interchangeable with substitute parts EAY33783401, EAY65689422, and EAY65689425

Important Notes

• Always unplug your television and discharge capacitors before beginning any repair work
• Verify your TV model number and existing board number match the compatibility list before ordering
• Take photos of all cable connections before disconnecting the old board to ensure proper reassembly
• If you're unsure about compatibility or installation, consult a qualified television repair technician
• Handle the board by its edges and avoid touching electronic components directly