LG OLED C2 Wont Turn On Red Light Flashing
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85%
CONF
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Power Supply Board (PSU)
The power supply board in this series frequently suffers from failure of the switching MOSFETs or electrolytic capacitors that stabilize the standby-to-run voltage transition. When these components fail to provide steady current to the main logic board, the system initiates a protection shutdown, resulting in the diagnostic red blinking light. Replacing the board restores the necessary current rails required for the OLED panel to initialize.
SKU: EAY65689423
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9%
CONF
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Main Logic Board
The Main Board acts as the sequence controller for the TV; failure of the BGA (Ball Grid Array) solder joints under the primary SoC (System on Chip) due to thermal cycling can interrupt the power-handshake protocol. If the PSU does not receive a 'Power_On' confirmation from the Main Board within a millisecond window, it defaults to a fault state. This part is the primary logic coordinator for all HDMI and processing inputs.
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6%
CONF
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OLED Panel Assembly
Internal shorts within the OLED's Thin-Film Transistor (TFT) backplane or the integrated driver ICs bonded to the glass will trigger the Power Supply's Over-Current Protection (OCP) circuit immediately. If the TV attempts to click 'on' but reverts to flashing red even after PSU replacement, the panel has suffered a non-serviceable internal electrical short. This is the most granular sellable component for panel-level defects.
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DIY Repair Guide
Watch exactly how to replace the Power Supply Board (PSU).