LG C1 OLED SERIES Wont Turn On Clicking Sound
| CONF | DIAGNOSIS | PART MATCH | ACTION |
|---|---|---|---|
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85%
CONF
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Power Supply Board (PSU)
The clicking sound is specifically the mechanical relay failing to maintain a closed circuit. This happens when the PSU detects an overcurrent or voltage instability within its own internal switching transformers or capacitors, forcing it back into standby to prevent thermal runaway.
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CHECK PRICE |
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10%
CONF
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Main Logic Board
The Main Board manages the power-on sequence; if the system-on-a-chip (SoC) or secondary voltage regulators are shorted, the board will pull the 'Power_Good' line low immediately after the relay clicks, causing the PSU to cycle off.
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CHECK PRICE |
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5%
CONF
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OLED Panel Assembly
Internal shorts within the organic light-emitting diode layers or the source driver COF (Chip-on-Film) can cause a total system shutdown. If the T-CON detects a current spike from the panel, it instructs the PSU to kill the relay to protect the electronics.
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CHECK PRICE |
DIY Repair Guide
Watch exactly how to replace the Power Supply Board (PSU).