No signal / black screen on the LG C3 OLED

Source: ProductDB enrichment catalog Confidence: 85% Verified Aug 8, 2026

The TV or monitor shows no signal, often from an HDMI issue or a wrong input.

How to fix No signal / black screen

Check the input source

Cycle through the inputs and ensure the correct source is selected.

Source: ProductDB enrichment catalog Confidence: 80% Verified Aug 8, 2026

Difficulty: ★ Est. 3 min

Reseat the HDMI cable

Unplug and reseat the HDMI cable on both ends, or try a different cable.

Source: ProductDB enrichment catalog Confidence: 80% Verified Aug 8, 2026

Difficulty: ★ Est. 5 min

Replacement parts for the LG C3 OLED

LG C3 OLED Remote Control LG C3 OLED Stand LG C3 OLED Power Cable LG C3 OLED Wall Mount LG C3 OLED HDMI Cable LG UltraGear 27GN950 Wall Mount LG UltraGear 27GN950 HDMI Cable LG UltraGear 27GP850 Wall Mount LG UltraGear 27GP850 HDMI Cable

← All LG C3 OLED error codes

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