LCD TV with the panel removed, showing the grid of lit LED backlights

Generic photo: RobertKuhlmann · CC BY-SA 3.0

Console won't run 4K 120 Hz: right HDMI port, cable and the TV's per-input signal setting

Almost always a setup problem, not a board fault. Four things must line up: the console is on a full-bandwidth HDMI 2.1 input (many TVs have only two), the cable is Ultra High Speed (the one that came with the console is fine), the TV's enhanced signal setting is turned on for that specific input, and the console's own 120 Hz output setting is on.

Cross-checked ~15 min easyBrands: Samsung, Sony, LG, TCL, Hisense, Vizio

Before you start

No hazards beyond reaching behind a wall-mounted TV; support the cable weight and do not yank connectors.

Diagnostic steps

Unlock all 4 steps with expected values

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OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work.

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